阅读说明：本技术 一种用于皮瓣增压的装置 (Device for pressurizing skin flap ) 是由 夏卫东 林才 戴文统 刘政军 赵胜 李元 于 2020-12-24 设计创作，主要内容包括：本发明公开了一种用于皮瓣增压的装置,包括：血管支架,所述血管支架设置在血管内,所述血管支架为空心管；增压泵本体,所述增压泵本体设置在所述血管支架内,所述增压泵本体包括进液管与出液管,所述进液管与所述出液管上均设置连接装置,所述增压泵本体通过所述连接装置与所述血管支架内壁可拆卸连接；第一瓣膜,所述第一瓣膜设置在所述出液管内；第二瓣膜,所述第二瓣膜设置在所述进液管内。本发明的目的在于提供一种用于皮瓣增压的装置,通过设置增压泵,增压泵能够增大血管灌注压,借助增压泵的力量,可以提高远端皮瓣的运血能力,使皮瓣远端和周缘建立新的血液循环,使皮瓣存活良好。(The invention discloses a device for pressurizing a skin flap, which comprises: the intravascular stent is arranged in a blood vessel and is a hollow tube; the booster pump body is arranged in the blood vessel support and comprises a liquid inlet pipe and a liquid outlet pipe, connecting devices are arranged on the liquid inlet pipe and the liquid outlet pipe, and the booster pump body is detachably connected with the inner wall of the blood vessel support through the connecting devices; a first valve disposed within the outlet tube; a second valve disposed within the inlet conduit. The invention aims to provide a device for pressurizing a skin flap, which is characterized in that a booster pump is arranged, the booster pump can increase the perfusion pressure of a blood vessel, the blood transport capacity of a skin flap at the far end can be improved by means of the force of the booster pump, new blood circulation is established at the far end and the periphery of the skin flap, and the skin flap can survive well.)

1. A device for pressurization of a skin flap, comprising:

the intravascular stent (1), wherein the intravascular stent (1) is arranged in a blood vessel, and the intravascular stent (1) is a hollow tube;

the booster pump comprises a booster pump body (2), wherein the booster pump body (2) comprises a liquid inlet pipe (3) and a liquid outlet pipe (4), and the liquid outlet pipe (4) is communicated with the blood vessel support (1);

a first valve (5), the first valve (5) being disposed within the outlet conduit (4);

a second valve (6), the second valve (6) being arranged inside the liquid inlet pipe (3).

2. The device for skin flap pressurization according to claim 1,

the booster pump body (2) is arranged in the blood vessel bracket (1) or is positioned outside the body;

one end of the liquid inlet pipe (3) far away from the booster pump body (2) is connected with a blood outlet pipe of the external blood supply device, a connecting device is arranged on the liquid inlet pipe (3), and the liquid inlet pipe (3) is detachably connected with the blood outlet pipe through the connecting device.

3. Device for skin flap pressurization according to claim 1, characterized in that the vessel wall of the stent (1) is of a reticular structure and is radially deformable between an expanded state and a compressed state.

4. The device for skin flap pressurization according to claim 1, characterized in that a micro motor (7) is arranged at the upper end of the booster pump body (2), and a power supply device (8) is electrically connected with the micro motor (7).

5. A device for skin flap supercharging according to claim 4, characterized in that the micro motor (7) is provided with a fourth rotating shaft (21) towards one end of the booster pump body (2), the fourth rotating shaft (21) extends into the booster pump body (2) and is provided with an impeller (22);

the surface of the impeller (22) is provided with a drug coating; the first valve (5) and the second valve (6) are both made of biomedical materials.

6. A device for skin flap pressurization as set forth in claim 2, wherein said connection device comprises:

the first circular ring (23) is sleeved on the liquid outlet pipe (4), the inner ring of the first circular ring (23) is fixedly connected with the outer wall of the liquid outlet pipe (4), and a second groove (24) is formed in one side, close to the liquid outlet pipe (4), of the first circular ring (23);

the second circular ring (25) is arranged in the second groove (24), and the inner ring of the second circular ring (25) is rotatably connected with the outer wall of the liquid outlet pipe (4);

three second through holes (26) are formed in each second through hole (26), the three second through holes (26) are distributed on the first circular ring (23) in an annular array mode, and the second through holes (26) penetrate through the outer wall of the first circular ring (23) and are communicated with the second grooves (24);

a sliding plate (27), wherein the sliding plate (27) is arranged in the second through hole (26), the sliding plate (27) is connected with the second through hole (26) in a sliding manner, one end of the sliding plate (27) extends into the second groove (24) and is in contact with the outer wall of the second circular ring (25), the other end of the sliding plate (27) extends to the outside of the first circular ring (23) and is provided with a connecting plate (28), and the cross section of the connecting plate (28) is arc-shaped;

the connecting rod (29) is arranged in the second groove (24), one end of the connecting rod (29) is rotatably connected with the side wall of the second circular ring (25), and the other end of the connecting rod (29) is rotatably connected with one end, far away from the connecting plate (28), of the connecting plate (28);

the electromagnet (30) is arranged in the second groove (24), one end of the electromagnet (30) is fixedly connected with the inner wall of the first circular ring (23), and the electromagnet (30) is electrically connected with a power supply device (8);

the magnetic block (31) is arranged in the second groove (24), one end of the magnetic block (31) is fixedly connected with the outer wall of the second circular ring (25), the lower surface of the magnetic block (31) is in contact with the upper surface of the electromagnet (30), and the magnetism of the lower end of the magnetic block (31) is the same as that of the upper end of the electromagnet (30) after being electrified;

the first spring (32) is arranged in the second groove (24), one end of the first spring (32) is fixedly connected with the inner wall of the first circular ring (23), and the other end of the first spring (32) is fixedly connected with the outer wall of the second circular ring (25).

7. The device for skin flap pressurization according to claim 6, further comprising a fixation device, said fixation device comprising:

a third through hole (33), wherein the third through hole (33) is arranged on the second circular ring (25), and the third through hole (33) penetrates through the front surface and the rear surface of the second circular ring (25);

the sleeve (34) is arranged in the second groove (24), one end of the sleeve (34) is fixedly connected with one side wall of the first circular ring (23) facing the second circular ring (25);

second spring (35), second spring (35) set up in sleeve (34), second spring (35) one end with first ring (23) lateral wall fixed connection, second spring (35) other end sets up gag lever post (36), gag lever post (36) with sleeve (34) inner wall sliding connection, gag lever post (36) are kept away from second spring (35) one end extends to in third through-hole (33).

8. The device for skin flap pressurization according to claim 5, further comprising:

a first flow sensor arranged in the liquid outlet pipe (4) and used for detecting the flow rate of blood in the liquid outlet pipe (4);

the second flow rate sensor is arranged in the liquid inlet pipe (3) and is used for detecting the flow rate of blood in the liquid inlet pipe (3);

the rotating speed sensor is arranged on the fourth rotating shaft (21) and is used for detecting the rotating speed of the fourth rotating shaft (21);

the rotating speed regulator is arranged at the upper end of the booster pump body (2), and is electrically connected with the micro motor (7) and used for regulating the rotating speed of the micro motor (7);

the first controller is respectively and electrically connected with the first flow sensor, the second flow sensor, the rotating speed sensor and the rotating speed regulator;

the first controller controls the rotation speed regulator to work based on the first flow speed sensor, the second flow speed sensor and the rotation speed sensor, and comprises the following steps:

step 1: calculating an actual supercharging efficiency of the booster pump body (2) by a formula (1) based on the detection values of the first flow rate sensor and the second flow rate sensor:

wherein eta is₁For the actual supercharging efficiency of the booster pump body (2) /)₁For a predetermined lift, v, of the booster pump body (2)₁The flow velocity, v, of the blood in the outlet tube (4) detected by the first flow velocity sensor₂The flow speed of the blood in the liquid inlet pipe (3) detected by the second flow sensor, wherein pi is the circumferential rate and is 3.14, r₁Is the radius of the liquid outlet pipe (4), rho is the density of blood in the liquid outlet pipe (4), G is the gravity acceleration, and G is 9.8m/s²，P₁Is the rated power of the micro motor, C is the resistance coefficient in the liquid outlet pipe (4), C₁Is the resistance coefficient, C, in the liquid inlet pipe (3)₀A preset resistance coefficient;

step 2: calculating the target rotating speed of the micro motor (7) by a formula (2) based on the calculation result of the step 1 and the detection value of the rotating speed sensor:

wherein n is₂Is a target speed, n, of the micro motor (7)₁The rotational speed, v, of the fourth shaft (21) detected by the rotational speed sensor before the rotational speed is adjusted₀Is the target flow velocity in the liquid outlet pipe (4), e is a natural constant, e is 2.72, r₂Is the radius of the impeller (22), mu is the viscosity coefficient of the blood in the liquid outlet pipe (4); log of lg with 10 as base, and t as unit time;

and step 3: and according to the calculation result of the step 2, the first controller controls the rotating speed regulator to regulate the actual rotating speed of the micro motor (7) to the target rotating speed of the micro motor (7).

9. The device for skin flap pressurization according to claim 1, characterized in that a drainage tube is further connected inside the vessel support (1), a drainage device is further connected to the end of the drainage tube located outside the body, and the drainage device comprises a first storage tank (37);

the device for flap pressurization further comprises a support and discharge device (38);

the support and discharge device (38) comprises:

a U-shaped seat (381);

a plurality of first elastic members (382), said plurality of first elastic members (382) being uniformly arranged on the inner bottom circumference side of said U-shaped seat (381), said first elastic members (382) comprising: the lower end of the sleeve (3821) is fixedly connected to the inner bottom end of the U-shaped seat (381); a vertical guide rod (3823) having a lower portion disposed within the sleeve (3821); the third spring (3822) is fixedly connected into the sleeve (3821), the upper end of the third spring (3822) is fixedly connected with the lower end of the vertical guide rod (3823), and the lower end of the third spring (3822) is fixedly connected with the inner bottom end of the U-shaped seat (381);

the supporting plate (383) is fixedly connected to the upper ends of the first vertical guide rods (3823), the first storage box (37) is supported on the supporting plate (383), and the first storage box is in sliding connection with the inner side wall of the U-shaped seat (381);

the discharge pipeline (384) is fixedly connected to one side wall of the U-shaped seat (381) and penetrates through the one side wall of the U-shaped seat (381), and a discharge port matched with the discharge pipeline (384) is formed in one side, close to the discharge pipeline (384), of the first storage tank (37);

a discharge tank (385) fixedly connected to the U-shaped seat (381) near the side wall through a connecting piece, wherein an inlet in the discharge tank (385) is fixedly connected with the discharge pipeline (384);

a piston (386) sealingly slidably connected within the exhaust tank (385);

a plurality of fourth springs (387) fixedly connected between the lower end of the piston (386) and the inner wall of the lower end of the discharge tank (385);

the supporting seat (389) is fixedly connected to the middle part of the bottom end of the U-shaped seat (381);

the supporting seat (389) is connected with the first electric reel (3810) and the second electric reel (3811) in a rotating mode at intervals in the front-back direction, a first pull rope (3812) is arranged on the first electric reel (3810), a second pull rope (3813) is arranged on the second electric reel (3811), and one end, far away from the first electric reel (3810), of the first pull rope (3812) is fixedly connected with the lower end of the supporting plate (383);

the fixed pulley (388) is arranged in the discharge box (385) and is positioned below the piston (386), and one end, away from the second electric reel (3811), of the second pull rope (3813) penetrates through the fixed pulley (388) and is fixedly connected with the lower end of the piston (386);

a second reservoir tank (37) communicating with the discharge port of the discharge tank (385);

a force sensor disposed on the third spring (3822) for detecting a pressure of the vertical guide rod (3823) against the third spring (3822);

a second controller electrically connected to the first electric reel (3810), the second electric reel (3811), and the first electric reel (3810).

Technical Field

The invention relates to the technical field of medical instruments, in particular to a device for pressurizing a skin flap.

Background

In recent years, with rapid development of industries such as industry, transportation and building, and appearance of chronic wounds such as diabetic ulcer, patients with large-area skin and tissue defects are more common, and the patients often have skin soft tissue defects, cannot be directly sutured and need skin flap repair. The random flap is widely applied to clinic because of the advantages of flexible application, convenient taking, good recovery and the like. However, in the case of an arbitrary flap the aspect ratio exceeds 1.5:1, the poor blood supply at the distal end causes necrosis to occur to different degrees, which undoubtedly brings about great limitation to the clinical application of the free flap. The blood perfusion pressure is a key factor for limiting the final length of the random flap (breaking through the current clinical situation of 1.5: 1), and in the past, an external pressurization or internal pressurization mode is usually adopted clinically, but the mode has the defects of difficult vascular anastomosis, new tissue trauma, vascular anastomosis leakage, anastomotic thrombus and other risks, great difficulty in clinical operation and difficult development in general hospitals.

At present, after the skin flap repairing operation is completed, the blood circulation of the distal skin flap is poor due to insufficient vascular perfusion pressure, so that the skin flap is necrotized. In recent years, due to rapid development of interventional technology, there is an urgent need in clinical practice for enhancing blood perfusion pressure, increasing survival of random skin flaps and reducing necrosis of skin flaps effectively, simply and minimally invasively.

Disclosure of Invention

The invention provides a device for pressurizing a skin flap, which is used for solving the problem of necrosis of the skin flap caused by insufficient perfusion pressure of blood vessels and poor blood circulation of a far-end skin flap after the existing skin flap repairing operation is finished.

In order to achieve the above object, the present invention provides a device for pressurizing a skin flap, which comprises a vascular stent, a pressure sensor and a controller, wherein the vascular stent is arranged in a blood vessel and is;

the booster pump body comprises a liquid inlet pipe and a liquid outlet pipe, and the liquid outlet pipe is communicated with the blood vessel support;

a first valve disposed within the outlet tube;

a second valve disposed within the inlet conduit.

Preferably, the booster pump body is arranged in the blood vessel support or is positioned outside the body;

one end of the liquid inlet pipe, which is far away from the booster pump body, is connected with a blood outlet pipe of the external blood supply device, a connecting device is arranged on the liquid inlet pipe, and the liquid inlet pipe is detachably connected with the blood outlet pipe through the connecting device.

Preferably, the vessel wall of the vascular stent is in a net structure and can be radially deformed between an expanded state and a compressed state.

Preferably, the upper end of the booster pump body is provided with a micro motor, and the power supply device is electrically connected with the micro motor.

Preferably, the micro motor faces one end of the booster pump body and is provided with a fourth rotating shaft, and the fourth rotating shaft extends to the inside of the booster pump body and is provided with an impeller.

Preferably, the impeller surface is provided with a drug coating.

Preferably, the first valve and the second valve are both made of biomedical materials.

Preferably, the connecting means comprises:

the first circular ring is sleeved on the liquid outlet pipe, the inner ring of the first circular ring is fixedly connected with the outer wall of the liquid outlet pipe, and a second groove is formed in one side, close to the liquid outlet pipe, of the first circular ring;

the second circular ring is arranged in the second groove, and the inner ring of the second circular ring is rotatably connected with the outer wall of the liquid outlet pipe;

the number of the second through holes is three, the three second through holes are distributed on the first circular ring in an annular array mode, and the second through holes penetrate through the outer wall of the first circular ring and are communicated with the second groove;

the sliding plate is arranged in the second through hole and is in sliding connection with the second through hole, one end of the sliding plate extends into the second groove and is in contact with the outer wall of the second circular ring, the other end of the sliding plate extends to the outside of the first circular ring and is provided with a connecting plate, and the cross section of the connecting plate is arc-shaped;

the connecting rod is arranged in the second groove, one end of the connecting rod is rotatably connected with the side wall of the second circular ring, and the other end of the connecting rod is rotatably connected with one end, far away from the connecting plate, of the connecting plate;

the electromagnet is arranged in the second groove, one end of the electromagnet is fixedly connected with the inner wall of the first circular ring, and the electromagnet is electrically connected with the power supply device;

the magnetic block is arranged in the second groove, one end of the magnetic block is fixedly connected with the outer wall of the second circular ring, the lower surface of the magnetic block is in contact with the upper surface of the electromagnet, and the magnetism of the lower end of the magnetic block is the same as that of the upper end of the electromagnet after the electromagnet is electrified;

the first spring is arranged in the second groove, one end of the first spring is fixedly connected with the inner wall of the first circular ring, and the other end of the first spring is fixedly connected with the outer wall of the second circular ring.

Preferably, the device further comprises a fixing device, wherein the fixing device comprises:

the third through hole is formed in the second circular ring and penetrates through the front surface and the rear surface of the second circular ring;

the sleeve is arranged in the second groove, and one end of the sleeve is fixedly connected with one side wall of the first circular ring facing the second circular ring;

the second spring, the second spring sets up in the sleeve, second spring one end with first ring lateral wall fixed connection, the second spring other end sets up the gag lever post, the gag lever post with sleeve inner wall sliding connection, the gag lever post is kept away from second spring one end extends to in the third through hole.

Preferably, the method further comprises the following steps:

the first flow sensor is arranged in the liquid outlet pipe and used for detecting the flow rate of blood in the liquid outlet pipe;

the second flow sensor is arranged in the liquid inlet pipe and used for detecting the flow rate of blood in the liquid inlet pipe;

the rotating speed sensor is arranged on the fourth rotating shaft and used for detecting the rotating speed of the fourth rotating shaft;

the rotating speed regulator is arranged at the upper end of the booster pump body and is electrically connected with the micro motor and used for regulating the rotating speed of the micro motor;

the first controller is respectively and electrically connected with the first flow sensor, the second flow sensor, the rotating speed sensor and the rotating speed regulator;

the first controller controls the rotation speed regulator to work based on the first flow speed sensor, the second flow speed sensor and the rotation speed sensor, and comprises the following steps:

step 1: calculating an actual supercharging efficiency of the booster pump body by formula (1) based on the detection values of the first flow rate sensor and the second flow rate sensor:

wherein eta is₁For the actual supercharging efficiency of the booster pump body, /)₁For a predetermined lift, v, of the booster pump body₁The flow velocity of the blood in the outlet tube, v, detected by the first flow velocity sensor₂The flow speed of the blood in the liquid inlet pipe detected by the second flow sensor is pi is a circumferential rate, pi is 3.14, r₁Is the radius of the liquid outlet pipe, rho is the density of blood in the liquid outlet pipe, G is the gravity acceleration, G is 9.8m/s2, P is₁Is rated power of the micro motor, C is resistance coefficient in the liquid outlet pipe, C is rated power of the micro motor₁Is the resistance coefficient in the liquid inlet pipe, C₀A preset resistance coefficient;

step 2: calculating the target rotating speed of the micro motor by a formula (2) based on the calculation result of the step 1 and the detection value of the rotating speed sensor:

wherein n is₂Is a target rotation speed, n, of the micro motor₁The rotation speed, v, of the fourth shaft detected by the rotation speed sensor before the rotation speed is adjusted₀Taking e as a natural constant, taking e as 2.72, r as the target flow velocity in the liquid outlet pipe₂The radius of the impeller is shown, and mu is the viscosity coefficient of blood in the liquid outlet pipe; l g logarithm base 10, t is unit time;

and step 3: and according to the calculation result of the step 2, the first controller controls the rotating speed regulator to regulate the actual rotating speed of the micro motor to the target rotating speed of the micro motor.

Preferably, a drainage tube is further connected in the intravascular stent, a drainage device is further connected at one end of the drainage tube positioned outside the body, and the drainage device comprises a first storage box;

the device for pressurizing the skin flap further comprises a supporting and discharging device;

the supporting and discharging device includes:

a U-shaped seat;

a plurality of first elastic component, evenly arranged on base end week side in the U-shaped seat a plurality of first elastic component, first elastic component includes: the lower end of the sleeve is fixedly connected to the inner bottom end of the U-shaped seat; the lower part of the vertical guide rod is arranged in the sleeve; the upper end of the third spring is fixedly connected with the lower end of the vertical guide rod, and the lower end of the third spring is fixedly connected with the bottom end of the U-shaped seat;

the supporting plate is fixedly connected to the upper ends of the first vertical guide rods, the first storage box is supported on the supporting plate, and the first storage box is in sliding connection with the inner side wall of the U-shaped seat;

the discharge pipeline is fixedly connected to one side wall of the U-shaped seat and penetrates through one side wall of the U-shaped seat, and a discharge port matched with the discharge pipeline is arranged on one side, close to the discharge pipeline, of the first storage tank;

the discharge box is fixedly connected to the U-shaped seat close to one side wall through a connecting piece, and an inlet in the discharge box is fixedly connected with the discharge pipeline;

the piston is connected in the discharge box in a sealing and sliding manner;

the fourth springs are fixedly connected between the lower end of the piston and the inner wall of the lower end of the discharge box;

the supporting seat is fixedly connected to the middle of the bottom end of the U-shaped seat;

the first electric reel and the second electric reel are rotationally connected to the supporting seat at intervals in a front-back mode, a first pull rope is arranged on the first electric reel, a second pull rope is arranged on the second electric reel, and one end, far away from the first electric reel, of the first pull rope is fixedly connected with the lower end of the supporting plate;

the fixed pulley is arranged in the discharge box and positioned below the piston, and one end, far away from the second electric reel, of the second pull rope penetrates through the fixed pulley and then is fixedly connected with the lower end of the piston;

the second storage tank is communicated with the discharge port of the discharge tank;

the force sensor is arranged on the third spring and used for detecting the pressure of the vertical guide rod on the third spring;

a second controller electrically connected to the first electric reel, the second electric reel, and the first electric reel.

The technical scheme of the invention has the following advantages: the invention aims to provide a device for pressurizing a skin flap, which is characterized in that a booster pump is arranged, the booster pump can increase the perfusion pressure of a blood vessel, the blood transport capacity of a skin flap at the far end can be improved by means of the force of the booster pump, new blood circulation is established at the far end and the periphery of the skin flap, and the skin flap can survive well.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the apparatus particularly pointed out in the written description and drawings thereof.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of a device for pressurizing a skin flap according to the present invention;

FIG. 2 is a schematic view of a stent used in a device for pressurizing a skin flap according to the present invention;

FIG. 3 is a schematic view of a charging assembly of a device for pressurizing a skin flap according to the present invention;

FIG. 4 is an enlarged view taken at A of FIG. 3 according to the present invention;

FIG. 5 is a schematic view of a connection device for pressurizing a flap according to the present invention;

FIG. 6 is a schematic view of a fixture for use in a flap pressurizer according to the present invention;

FIG. 7 is an enlarged view taken at B of FIG. 6 in accordance with the present invention;

FIG. 8 is a schematic structural view of an embodiment of the supporting and discharging device of the present invention.

The following were used: 1. a vascular stent; 2. a booster pump body; 3. a liquid inlet pipe; 4. a liquid outlet pipe; 5. a first valve; 6. a second valve; 7. a micro motor; 8. a power supply device; 9. a first groove; 10. a first through hole; 11. a first rotating shaft; 12. a first bevel gear; 13. a turbine; 14. a second rotating shaft; 15. a first bearing; 16. a second bevel gear; 17. a third bevel gear; 18. a micro-generator; 19. a third rotating shaft; 20. a fourth bevel gear; 21. a fourth rotating shaft; 22. an impeller; 23. a first circular ring; 24. a second groove; 25. a second circular ring; 26. a second through hole; 27. a slide plate; 28. a connecting plate; 29. a connecting rod; 30. an electromagnet; 31. a magnetic block; 32. a first spring; 33. a third through hole; 34. a sleeve; 35. a second spring; 36. a limiting rod; 37. a first storage tank; 38. a support and discharge device; 381. a U-shaped seat; 382. a first elastic member; 3821. a sleeve; 3822. a third spring; 3823. a vertical guide rod; 383. a support plate; 384. a discharge conduit; 385. a discharge tank; 386. a piston; 387. a second spring; 388. a fixed pulley; 389. a supporting seat; 3810. a first electric reel; 3811. a second electric reel; 3812. a first pull cord; 3813. a second draw cord.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.

Example 1

An embodiment of the present invention provides a device for skin flap pressurization, as shown in fig. 1 to 3, including:

the intravascular stent 1 is arranged in a blood vessel, and the intravascular stent 1 is a hollow tube;

the booster pump body 2 comprises a liquid inlet pipe 3 and a liquid outlet pipe 4, and the liquid outlet pipe 4 is communicated with the blood vessel support 1; the booster pump body is internally provided with a booster device which can be a micro motor and a related structure thereof.

A first valve 5, said first valve 5 being arranged within said outlet conduit 4;

a second valve 6, said second valve 6 being arranged inside said intake pipe 3.

Wherein, optionally, the booster pump body 2 is arranged in the blood vessel support 1 or is positioned outside the body;

one end of the liquid inlet pipe 3, which is far away from the booster pump body 2, is connected with a blood outlet pipe of the external blood supply device, a connecting device is arranged on the liquid inlet pipe 3, and the liquid inlet pipe 3 is detachably connected with the blood outlet pipe through the connecting device. Preferably, the first valve 5 and the second valve 6 are both made of biomedical materials.

The first valve 5 and the second valve 6 are both made of biomedical materials which have excellent physical corrosion resistance and biocompatibility and are used for diagnosing, treating, repairing or replacing damaged tissues and organs of an organism or improving the functions of the organism.

The working principle and the beneficial effects of the technical scheme are as follows: in implanting the blood vessel with vascular support 1 with the mode that the operation was intervened, the outer wall and the laminating of blood vessel inner wall of vascular support 1, vascular support 1 is fixed to be placed at intravascular, then start booster pump body 2, booster pump body 2 begins the operation, booster pump body 2 can be for the blood pressure boost, set up first valve 5 at the liquid outlet, set up second valve 6 at the inlet, first valve 5 and second valve 6 have played the effect of check valve, make the blood in the blood vessel carry out one-way flow, the pressure boost through the booster pump, can increase blood vessel perfusion pressure, with the help of the strength of booster pump, can improve the fortune blood ability of distal end flap, make flap distal end and periphery establish new blood circulation, make the flap survive well.

Example 2 on the basis of example 1, the vessel wall of the vascular stent 1 is in a net structure and can be radially deformed between an expanded state and a compressed state.

The working principle and the beneficial effects of the technical scheme are as follows: the vessel wall of the vessel stent 1 is of a net structure, so that the vessel stent 1 can be radially deformed between an expansion state and a compression state, and the thickness of the vessel stent 1 is adjusted, so that the vessel stent 1 can be implanted into different vessels.

Embodiment 3, on the basis of embodiment 1 or 2, as shown in fig. 3 and 4, a micro motor 7 is disposed at the upper end of the booster pump body 2, a power supply device 8 is disposed at the upper end of the external end of the liquid inlet pipe 3, and the power supply device 8 is electrically connected to the micro motor 7.

The working principle and the beneficial effects of the technical scheme are as follows: 2 upper ends of booster pump body set up micro motor 7, micro motor 7 8 electric connection of power supply unit on the feed liquor pipe, power supply unit 8 can be rechargeable battery, for micro motor 7 power supply through power supply unit 8, micro motor 7 begins the operation to make the booster pump open the pressure boost work.

Embodiment 4, on the basis of embodiment 3, as shown in fig. 4, further includes a charging assembly, where the charging assembly includes:

the first groove 9 is arranged on the inner wall of the upper end of the liquid inlet pipe 3 (specifically, the position of the liquid outlet pipe far away from the vascular stent), the upper end of the first groove 9 is provided with a first through hole 10, and the upper end of the first through hole 10 is communicated with the outside of the liquid inlet pipe 3;

the first rotating shaft 11 is arranged in the liquid inlet pipe 3, the first rotating shaft 11 is positioned below the first groove 9, two ends of the first rotating shaft 11 are respectively and rotatably connected with the inner walls of the front side and the rear side of the liquid outlet pipe 4, a first bevel gear 12 and a turbine 13 are sequentially arranged on the first rotating shaft 11 from front to back, and the upper end of the turbine 13 and the upper end of the first bevel gear 12 are both positioned in the first groove 9;

a second rotating shaft 14, wherein the second rotating shaft 14 is arranged in the first through hole 10, a first bearing 15 is sleeved on the second rotating shaft 14, the second rotating shaft 14 is rotatably connected with the inner wall of the first through hole 10 through the first bearing 15, one end of the second rotating shaft 14 extends to the lower part of the first through hole 10 and is provided with a second bevel gear 16, the second bevel gear 16 is meshed with the first bevel gear 12, and the other end of the second rotating shaft 14 extends to the upper part of the first through hole 10 and is provided with a third bevel gear 17;

the micro generator 18 is arranged on the outer wall of the upper end of the liquid inlet pipe 3, the micro generator 18 is electrically connected with the power supply device 8, a third rotating shaft 19 is arranged at one end, far away from the power supply device 8, of the micro generator 18, a fourth bevel gear 20 is arranged at one end, far away from the micro generator 18, of the third rotating shaft 19, and the fourth bevel gear 20 is meshed with the third bevel gear 17.

Preferably, this embodiment is used when the booster pump body is located outside the body.

The working principle and the beneficial effects of the technical scheme are as follows: when blood flows in the liquid inlet pipe 3, the blood flows to drive the turbine 13 to rotate, the turbine 13 rotates to drive the first rotating shaft 11 to rotate, the first rotating shaft 11 rotates to drive the first bevel gear 12 to rotate, the first bevel gear 12 is meshed with the second bevel gear 16 in the first groove 9, through gear transmission, the second bevel gear 16 rotates to drive the second rotating shaft 14 to rotate in the first through hole 10, the second rotating shaft 14 rotates to drive the third bevel gear 17 to rotate, the third bevel gear 17 rotates to drive the fourth bevel gear 20 to rotate, the fourth bevel gear 20 rotates to drive the third rotating shaft 19 to rotate, the third rotating shaft 19 is connected with the micro-generator 18, the micro-generator 18 generates electricity, the micro-generator 18 is electrically connected with the power supply device 8, the electric energy generated by the micro-generator 18 can directly charge the power supply device 8, so as to increase the electric quantity of the power supply device 8, the service life of the power supply device 8 is prolonged, so that the micro motor 7 is fully supplied with power, the boosting time of the booster pump is prolonged, good blood circulation of the far end of the flap is guaranteed, and the flap is prevented from being necrotic.

Embodiment 5, on the basis of embodiment 3, as shown in fig. 3, the micro motor 7 is provided with a fourth rotating shaft 21 towards one end of the booster pump body 2, and the fourth rotating shaft 21 extends into the booster pump body 2 and is provided with an impeller 22.

Wherein, optionally, the surface of the impeller 22 is provided with a drug coating. The surface of the impeller 22 is coated with a drug coating, and the drug coating can be a VEGF coating, a slow release preparation of antibiotics, a slow release component of anticoagulant drugs and the like, so that the corrosion resistance of the impeller 22 is improved, and the pollution of the impeller 22 material to blood can be avoided.

The working principle and the beneficial effects of the technical scheme are as follows: the fourth rotating shaft 21 is arranged at one end of the micro motor 7, the fourth rotating shaft 21 extends into the booster pump body 2 and is provided with the impeller 22, the micro motor 7 is started to drive the impeller 22 to rotate rapidly, the blades of the impeller 22 drive blood to rotate, the blood flows to the outer edge of the impeller 22 by means of inertia when rotating, meanwhile, the impeller 22 sucks the blood from the liquid inlet pipe 3, in the process, the blood in the impeller 22 flows around the blades, in the flowing motion, the blood generates acting force to act on the blades, in turn, the blades act on the blood by the force with equal size and opposite direction, the force acts on the blood, and the blood obtains energy to flow out of the impeller 22 and flow out of the liquid outlet pipe 4, so that the kinetic energy and the pressure energy of the blood are increased, the perfusion pressure of the blood in a blood vessel is increased, and the blood transport capability of a far-end.

Example 6

On the basis of any one of embodiments 2 to 5, as shown in fig. 5, the connecting device includes:

the first circular ring 23 is sleeved on the liquid outlet pipe 4, the inner ring of the first circular ring 23 is fixedly connected with the outer wall of the liquid outlet pipe 4, and a second groove 24 is formed in one side, close to the liquid outlet pipe 4, of the first circular ring 23;

the second circular ring 25 is arranged in the second groove 24, and the inner ring of the second circular ring 25 is rotatably connected with the outer wall of the liquid outlet pipe 4;

three second through holes 26 are formed in the second through holes 26, the three second through holes 26 are distributed on the first circular ring 23 in an annular array, and the second through holes 26 penetrate through the outer wall of the first circular ring 23 and are communicated with the second grooves 24;

a sliding plate 27, wherein the sliding plate 27 is arranged in the second through hole 26, the sliding plate 27 is slidably connected with the second through hole 26, one end of the sliding plate 27 extends into the second groove 24 and contacts with the outer wall of the second circular ring 25, the other end of the sliding plate 27 extends to the outside of the first circular ring 23 and is provided with a connecting plate 28, and the cross section of the connecting plate 28 is arc-shaped;

the connecting rod 29 is arranged in the second groove 24, one end of the connecting rod 29 is rotatably connected with the side wall of the second circular ring 25, and the other end of the connecting rod 29 is rotatably connected with one end, far away from the connecting plate 28, of the connecting plate 28;

the electromagnet 30 is arranged in the second groove 24, one end of the electromagnet 30 is fixedly connected with the inner wall of the first circular ring 23, and the electromagnet 30 is electrically connected with the power supply device 8;

the magnetic block 31 is arranged in the second groove 24, one end of the magnetic block 31 is fixedly connected with the outer wall of the second ring 25, the lower surface of the magnetic block 31 is in contact with the upper surface of the electromagnet 30, and the magnetism of the lower end of the magnetic block 31 is the same as that of the upper end of the electromagnet 30 after being electrified;

the first spring 32 is arranged in the second groove 24, one end of the first spring 32 is fixedly connected with the inner wall of the first circular ring 23, and the other end of the first spring 32 is fixedly connected with the outer wall of the second circular ring 25.

The working principle and the beneficial effects of the technical scheme are as follows: the first ring 23 is sleeved on the liquid outlet pipe 4 and fixedly connected with the outer wall of the liquid outlet pipe 4, the second ring 25 can rotate in the second groove 24 of the first ring 23, when the electromagnet 30 is not electrified, the magnetic block 31 is attracted with the upper surface of the electromagnet 30 under the action of magnetic force, the sliding plate 27 is arranged at one end in the second groove 24 and close to the outer wall of the second ring 25, the connecting plate 28 is not contacted with the inner wall of the blood vessel support 1, at the moment, the booster pump body 2 can slide left and right in the blood vessel support 1, when the blood vessel support 1 is implanted into a blood vessel, the electromagnet 30 is electrified, the magnetism of the upper end of the electromagnet 30 after electrification is the same as that of the lower end of the magnetic block 31, under the action of magnetic mutual exclusion, the magnetic block 31 rotates upwards, the magnetic block 31 is separated from the electromagnet 30, the magnetic block 31 rotates to drive the second ring 25 to rotate, the first spring 32 is stretched, the second ring 25 rotates anticlockwise to drive the, the connecting rod 29 moves to drive the sliding plate 27 to slide towards the direction far away from the outer wall of the second circular ring 25, the sliding plate 27 drives the connecting plate 28 to move towards the inner wall of the intravascular stent 1 until the outer surface of the connecting plate 28 is attached to the inner wall of the intravascular stent 1, at this time, the booster pump body 2 is connected with the blood vessel support 1, the booster pump body 2 can be put into use, the booster pump body 2 can change along with the radial change of the blood vessel support 1, the adaptability of the booster pump body 2 is improved, after the boosting is finished, the electromagnet 30 is powered off, under the elastic force of the first spring 32 and the action of the magnetic block 31, the second ring 25 rotates clockwise until the magnetic block 31 is attracted to the electromagnet 30 again, and by arranging the connecting device, can realize the booster pump body 2 and connect dismantled in vascular support 1, connecting device can change along with vascular support 1's radial change, has improved the adaptability of booster pump body 2 in vascular support 1.

Example 7

On the basis of embodiment 6, as shown in fig. 6 and 7, the fixing device further comprises:

a third through hole 33, wherein the third through hole 33 is arranged on the second ring 25, and the third through hole 33 penetrates through the front and back surfaces of the second ring 25;

a sleeve 34, wherein the sleeve 34 is arranged in the second groove 24, and one end of the sleeve 34 is fixedly connected with one side wall of the first circular ring 23 facing the second circular ring 25;

the second spring 35, the second spring 35 sets up in the sleeve 34, second spring 35 one end with first ring 23 lateral wall fixed connection, the second spring 35 other end sets up gag lever post 36, gag lever post 36 with sleeve 34 inner wall sliding connection, gag lever post 36 keeps away from second spring 35 one end extends to in the third through hole 33.

The working principle and the beneficial effects of the technical scheme are as follows: when the electromagnet 30 is attracted to the magnetic block 31, under the action of the second spring 35, the limiting rod 36 is inserted into the third through hole 33, the head of the limiting rod 36 is spherical, the first circular ring 23 and the second circular ring 25 can be further fixed through the limiting rod 36, the second circular ring 25 is prevented from rotating randomly in the first circular ring 23, after the electromagnet 30 is powered on, the second circular ring 25 rotates anticlockwise under the action of magnetic force, the limiting rod 36 can be disengaged from the third through hole 33, the limiting rod 36 slides towards the first circular ring 23 in the sleeve 34, the second circular ring 25 can rotate freely in the first circular ring 23, and by arranging the fixing device, the first circular ring 23 and the second circular ring 25 can be fixed, so that the stability of the first circular ring 23 and the second circular ring 25 is improved.

Embodiment 8, on the basis of embodiment 5, further includes:

the first flow sensor is arranged in the liquid outlet pipe 4 and used for detecting the flow rate of blood in the liquid outlet pipe 4;

the second flow rate sensor is arranged in the liquid inlet pipe 3 and is used for detecting the flow rate of blood in the liquid inlet pipe 3;

the rotating speed sensor is arranged on the fourth rotating shaft 21 and used for detecting the rotating speed of the fourth rotating shaft 21;

the rotating speed regulator is arranged at the upper end of the booster pump body 2 and is electrically connected with the micro motor 7 and used for regulating the rotating speed of the micro motor 7;

the first controller is respectively and electrically connected with the first flow sensor, the second flow sensor, the rotating speed sensor and the rotating speed regulator;

the first controller controls the rotation speed regulator to work based on the first flow speed sensor, the second flow speed sensor and the rotation speed sensor, and comprises the following steps:

step 1: based on the detection values of the first flow rate sensor and the second flow rate sensor, the actual supercharging efficiency of the booster pump body 2 is calculated by formula 1:

wherein eta is₁For the actual supercharging efficiency of the booster pump body 2, /)₁For a predetermined lift, v, of the booster pump body 2₁The flow velocity, v, of the blood in the outlet tube 4 detected by the first flow velocity sensor₂The flow velocity of the blood in the liquid inlet pipe 3 detected by the second flow velocity sensor, wherein pi is the circumferential rate and is 3.14, r₁Is the radius of the liquid outlet pipe 4, rho is the density of blood in the liquid outlet pipe 4, G is the gravity acceleration, G is 9.8m/s2, P₁The rated power of the micro motor is shown, and C is the resistance coefficient in the liquid outlet pipe 4; c₁Is the resistance coefficient, C, in the liquid inlet pipe (3)₀A preset resistance coefficient;

step 2: based on the calculation result of step 1 and the detection value of the rotation speed sensor, calculating the target rotation speed of the micro motor 7 by formula 2:

wherein n is₂Is a target rotation speed, n, of the micro motor 7₁The rotational speed, v, of the fourth shaft 21 sensed by the rotational speed sensor before the rotational speed is adjusted₀Is the target flow velocity in the liquid outlet pipe 4, e is a natural constant, e is 2.72, r₂Is the radius of the impeller 22, and μ is the viscosity coefficient of the blood in the outlet tube 4; l g base 10 logarithm;

and step 3: and according to the calculation result of the step 2, the first controller controls the rotating speed regulator to regulate the actual rotating speed of the micro motor 7 to the target rotating speed of the micro motor 7.

The working principle and the beneficial effects of the technical scheme are as follows: the method comprises the steps of arranging a first flow rate sensor in a liquid outlet pipe 4, arranging a second flow rate sensor in a liquid inlet pipe 3, respectively detecting the flow rate of blood in a liquid pipe 4 and the flow rate of blood in the liquid inlet pipe 3 through the first flow rate sensor and the second flow rate sensor, namely the flow rate of the blood after pressurization and the flow rate of the blood before pressurization, then calculating the actual pressurization efficiency of a booster pump body 2 through a formula 1 through the detection values of the first flow rate sensor and the second flow rate sensor, comprehensively considering resistance coefficients (the value ranges of the resistance coefficients are both larger than 0 and smaller than 1) in the liquid outlet pipe 4 and the resistance coefficient in the liquid inlet pipe 3 in the calculation process, wherein the resistance coefficients are preset, the larger the resistance coefficient is, the lower the actual pressurization efficiency is, adding the calculation of the resistance coefficients, so that the calculation result of the formula 1 is more reliable, and then according to the calculation result of, the rotating speed of the fourth rotating shaft 21 detected by the rotating speed sensor is combined, the target rotating speed of the micro motor 7 can be calculated through a formula 2, after the actual rotating speed of the micro motor 7 reaches the target rotating speed of the micro motor 7, the pressurization of blood at the far end of the flap can be met, flap necrosis is prevented, in the calculating process, the viscosity coefficient of the blood is combined according to the field condition, the calculation is more accurate, finally, the first controller can control the rotating speed sensor to adjust the rotating speed of the micro motor 7, the actual rotating speed of the micro motor 7 reaches the target rotating speed, and therefore the pressurization of the far end of the flap is met.

Example 9

On the basis of the embodiment 1, as shown in fig. 8, a drainage tube is further connected in the intravascular stent 1, a drainage device is further connected to one end of the drainage tube positioned outside the body, and the drainage device comprises a first storage tank 37;

the device for skin flap pressurization further comprises a support and discharge device 38;

the support and discharge device 38 comprises:

a U-shaped seat 381;

a plurality of first elastic members 382, said plurality of first elastic members 382 being uniformly arranged on the inner bottom circumference side of U-shaped seat 381, said first elastic members 382 comprising: a sleeve 3821, the lower end of which is fixedly connected to the inner bottom end of the U-shaped seat 381; a vertical guide rod 3823, a lower portion of which is disposed within the sleeve 3821; the third spring 3822 is fixedly connected in the sleeve 3821, the upper end of the third spring 3822 is fixedly connected with the lower end of the vertical guide rod 3823, and the lower end of the third spring 3822 is fixedly connected with the inner bottom end of the U-shaped seat 381;

a supporting plate 383 fixedly connected to the upper ends of the first vertical guide rods 3823, wherein the first storage box 37 is supported on the supporting plate 383 and is slidably connected with the inner side wall of the U-shaped seat 381;

a discharge pipe 384 fixedly connected to a sidewall of the U-shaped seat 381 and penetrating the sidewall of the U-shaped seat 381, wherein a discharge port corresponding to the discharge pipe 384 is provided at a side of the first storage tank 37 adjacent to the discharge pipe 384;

a discharge tank 385 fixedly connected to the U-shaped seat 381 near one side wall by a connecting member, wherein an inlet of the discharge tank 385 is fixedly connected to the discharge pipe 384;

a piston 386 sealingly slidably connected within the exhaust tank 385;

a plurality of fourth springs 387 fixedly coupled between the lower end of the piston 386 and the inner wall of the lower end of the discharge tank 385;

the supporting seat 389 is fixedly connected to the middle part of the bottom end of the U-shaped seat 381;

a first electric reel 3810 and a second electric reel 3811 which are rotatably connected to the support base 389 at intervals in the front-rear direction, wherein a first pull rope 3812 is arranged on the first electric reel 3810, a second pull rope 3813 is arranged on the second electric reel 3811, and one end, far away from the first electric reel 3810, of the first pull rope 3812 is fixedly connected with the lower end of the support plate 383;

a fixed pulley 388 which is arranged in the discharge box 385 and is positioned below the piston 386, wherein one end of the second pull rope 3813 far away from the second electric reel 3811 passes through the fixed pulley 388 and is fixedly connected with the lower end of the piston 386;

the second reservoir tank 37 communicates with the discharge port of the discharge tank 385;

a force sensor, disposed on the third spring 3822, for detecting a pressure of the vertical guide rod 3823 against the third spring 3822;

a second controller electrically connected to the first electric reel 3810, the second electric reel 3811, and the first electric reel 3810.

The working principle and the beneficial effects of the technical scheme are as follows: the first storage tank is used for storing liquid drained out of the body through the drainage tube, when the liquid stored in the first storage tank is too large, the first spring is further compressed, the first storage tank moves downwards in the U-shaped seat, and meanwhile, the pressure on the force sensor is increased;

when the liquid in the first storage tank increases, the liquid moves downwards to the discharge port communicated with the discharge pipeline, and the liquid in the first storage tank is discharged to the second storage tank through the discharge pipeline and the discharge tank;

meanwhile, when the detection value of the force sensor is larger than the preset value, the second controller controls the second electric reel to rotate, so that the piston is driven to move downwards, liquid is sucked into the discharge box and discharged out of the discharge box, and the liquid is discharged out of the first storage box conveniently and quickly.

After the liquid in the first storage tank is discharged, the first storage tank starts to move upwards, the force sensor is reduced at the same time, and the liquid is not discharged through the discharge pipeline at the moment; thus, one circulation is realized, automatic liquid drainage is realized, the influence on drainage of the drainage tube due to excessive liquid in the first storage tank is avoided, and the influence on drainage efficiency and inconvenience for doctors and patients due to the fact that the drainage tube needs to be disassembled to replace the first storage tank after the first storage tank stores excessive liquid is avoided; and the first elastic component can be used for damping the supporting plate, the first storage box on the supporting plate and parts on the supporting plate and guiding the movement, so that the reliable operation of the invention is ensured.

Meanwhile, the electric device detection liquid level and the like do not need to be arranged in the first storage box, so that the electric device is prevented from being polluted.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.