阅读说明：本技术 一种折叠式止血器械 (Folding type hemostatic instrument ) 是由 何朝东 敬兴义 赵金堂 龚宇 于 2020-08-14 设计创作，主要内容包括：本发明涉及一种折叠式止血器械,属于医疗器械领域。该折叠式止血器械包括手柄、支撑组件和电极组件,支撑组件包括第一折臂、第二折臂和折弯组件,第二折臂连接于手柄,第一折臂和第二折臂铰接且通过折弯组件控制弯折；电极组件包括折叠组件和至少两根电极,电极能够独立展开或折叠。该折叠式止血器械,通过支撑组件控制电极组件的朝向,并且电极组件的电极能够独立旋转,从而使得电极能够改变朝向及展开或折叠。折叠式止血器械可以方便的插入需要止血的部位,且能够实现超大范围、强力有效的止血；多个电极具有不同的排布方式,适用于对不同形状的部位止血；电极在第一折臂的带动下改变朝向,可以实现对不同部位的组织进行止血。(The invention relates to a folding type hemostatic instrument, and belongs to the field of medical instruments. The folding type hemostatic instrument comprises a handle, a support assembly and an electrode assembly, wherein the support assembly comprises a first folding arm, a second folding arm and a bending assembly, the second folding arm is connected to the handle, and the first folding arm and the second folding arm are hinged and controlled to be bent through the bending assembly; the electrode assembly includes a folding assembly and at least two electrodes that can be independently unfolded or folded. The folding hemostatic device controls the orientation of the electrode assembly through the support assembly, and the electrodes of the electrode assembly can be independently rotated, thereby enabling the electrodes to change orientation and to unfold or fold. The folding hemostatic instrument can be conveniently inserted into a position needing hemostasis, and can realize powerful effective hemostasis in an ultra-large range; the plurality of electrodes have different arrangement modes and are suitable for stopping bleeding of parts with different shapes; the direction of the electrode is changed under the driving of the first folding arm, so that the hemostasis of tissues at different parts can be realized.)

1. A folding haemostatic device, characterised in that the folding haemostatic device (10) comprises a handle (11), a support assembly (12) and an electrode assembly (15);

the supporting assembly (12) comprises a first folding arm (120), a second folding arm (121) and a bending assembly (122), the second folding arm (121) is connected to the handle (11), the first folding arm (120) and the second folding arm (121) are hinged, and the bending assembly (122) is configured to control the first folding arm (120) to bend relative to the second folding arm (121);

the electrode assembly (15) comprises a folding assembly (150) and at least two electrodes (151), wherein each electrode (151) comprises a rotating part (154), a connecting part (156) and a folding part (155) which are sequentially connected, the central line of each folding part (155) is not coincident with the central line of each rotating part (154), each rotating part (154) is arranged at the end part of each first folding arm (120) and is driven to rotate by the folding assembly (150), and each folding part (155) rotates around the central line of each rotating part (154) to realize independent unfolding or folding of the electrode (151).

2. The folding hemostatic instrument according to claim 1, wherein the bending assembly (122) comprises a control portion (123) and an actuating portion (124), the actuating portion (124) being disposed at the articulation of the first folding arm (120) and the second folding arm (121) and being driven by the control portion (123), the actuating portion (124) being configured to drive the first folding arm (120) to swing passively with respect to the second folding arm (121).

3. The folding hemostatic instrument according to claim 2, wherein the actuating portion (124) comprises a driving member (128), a driven member (129) and a locking member (130), the driven member (129) is fixed to the first folding arm (120) and has at least two locking slots (131), the control portion (123) drives the driven member (129) to rotate through the driving member (128), the locking member (130) is fixed to the second folding arm (121), and the locking member (130) is selectively inserted into one of the locking slots (131) and can be disengaged from the locking slot (131) under the action of the driving member (128).

4. The folding hemostatic instrument according to claim 3, wherein the control part (123) comprises a dial button (125), a gear (126) and at least one brace (127), the dial button (125) is rotatably disposed on the second folding arm (121), the gear (126) is fixed in the dial button (125), one end of the brace (127) is provided with a rack part (144) matched with the gear (126), and the other end is hinged with the active part (128).

5. The folding hemostatic instrument of claim 1, wherein a centerline of the rotating portion (154) and a centerline of the folding portion (155) are parallel.

6. The folding hemostatic device of claim 5, wherein a center line of the rotating portion (154) is parallel to a center line of the first folding arm (120), and wherein the at least two electrode assemblies (15) are distributed around the center line of the first folding arm (120).

7. The folding hemostatic instrument according to claim 1, wherein the folding assembly (150) comprises a transmission (152) and a folding knob (153), the transmission (152) having one end fixed to the electrode (151) and another end fixed to the folding knob (153).

8. The folding hemostatic device according to claim 7, wherein the transmission member (152) is a flexible tubular structure, the transmission member (152) comprises a tube body (157), a first flexible portion (158) is disposed on the tube body (157), the first flexible portion (158) is disposed at the hinge joint of the first folding arm (120) and the second folding arm (121), and the first flexible portion (158) can bend and transmit torque.

9. The folding hemostatic device of claim 8, wherein the tube (157) further has a second flexible portion (159) disposed thereon, the second flexible portion (159) being adjacent to the folding knob (153), the second flexible portion (159) being capable of bending and transmitting torque.

10. The folding hemostatic device according to claim 8, wherein the transmission member (152) further comprises a flexible insulating layer (160) and an insulating hose (161), the flexible insulating layer (160) covers the outer surface of the tube (157), the insulating hose (161) is located inside the tube (157), and a first gap exists between the outer surface of the insulating hose (161) and the inner surface of the tube (157); the electrode (151) comprises an inner tube (162) and an outer tube (163), the inner tube (162) is located inside the outer tube (163), a second gap exists between the outer surface of the inner tube (162) and the inner surface of the outer tube (163), the tail part of the inner tube (162) is communicated with the insulating hose (161), the head part of the inner tube is communicated with the outer tube (163), and the first gap and the second gap are communicated so that the transmission piece (152) forms a cooling medium circulation channel.

11. The folding hemostatic device according to claim 7, wherein the folding hemostatic device (10) further comprises a revolution component (18), the revolution component (18) comprises a revolution knob (180) and a rotation base (181), the rotation base (181) is rotatably connected to the handle (11) around its center line, the center line of the rotation base (181) is not coincident with the center line of the folding knob (153), one end of the second folding arm (121) is coaxially fixed with the rotation base (181), the revolution knob (180) is rotatably fitted to the handle (11) and the revolution knob (180) is configured to drive the rotation base (181) and the second folding arm (121) to rotate synchronously.

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to a folding type hemostatic instrument.

Background

At present, abdominal cavity and thoracic cavity surgery is usually performed in an open mode, that is, the abdominal cavity or the thoracic cavity of a patient is cut, diseased organs are exposed, and the surgery is performed in an open state. The open type operation has great damage to patients, long postoperative recovery period of the patients, obvious pain and high hospitalization cost.

In the future, laparoscopic minimally invasive surgery must be the main trend in abdominal or thoracic surgery and other surgical procedures, such as laparoscopic liver cut.

The blood vessels of the liver are dense and rich in blood; liver resection has high hemostatic requirements and requires powerful and effective hemostatic instruments.

However, at present, an electrosurgical hemostatic instrument such as an electric knife, an electric coagulation forceps, an ultrasonic knife, an electric coagulation forceps and the like is frequently used in the liver resection operation; these hemostatic devices are typically used for surface hemostasis, with a small depth and range of hemostasis, and are inefficient in performing wide range cutting procedures. Moreover, the above hemostatic instruments are bulky and cannot pass through a puncture outfit (inner diameter 5-15mm) or an endoscope with a small caliber; they are only used for open surgery and are not suitable for under-the-mirror surgery. And the hemostatic instruments with smaller volume generally have weaker hemostatic ability and cannot meet the hemostatic requirement of dry resection surgery. The lack of hemostatic instruments that can be used for an endoscopic procedure makes an endoscopic liver resection difficult to achieve.

Disclosure of Invention

In view of the above, it is an object of embodiments of the present invention to provide a foldable hemostatic device in which the orientation of an electrode assembly is controlled by a support assembly and the electrodes of the electrode assembly can be independently rotated, thereby enabling the electrodes to change orientation and to be unfolded or folded. The electrode has small volume when folded, can be conveniently inserted into a puncture outfit (with the inner diameter of 5-15mm) or an endoscope and enters a part needing hemostasis, has large volume when unfolded, and can realize powerful and effective hemostasis in an oversized range; moreover, the electrodes can rotate independently, and the plurality of electrodes have different arrangement modes, so that the hemostatic bag is suitable for hemostasis of parts with different shapes; in addition, the direction of the electrode is changed under the driving of the first folding arm, so that the tissue at different parts can be stopped bleeding, and the operation is simpler, more convenient and quicker.

The embodiment of the invention is realized by the following steps:

embodiments of the present invention provide a folding hemostatic device that includes a handle, a support assembly, and an electrode assembly.

The supporting assembly comprises a first folding arm, a second folding arm and a bending assembly, the second folding arm is connected to the handle, the first folding arm is hinged to the second folding arm, and the bending assembly is configured to control the first folding arm to bend relative to the second folding arm.

Electrode subassembly includes folding assembly and two piece at least electrodes, the electrode is including the rotation portion, connecting portion and the folding portion that connect gradually, the central line of folding portion with the central line of rotation portion does not coincide, rotation portion set up in the tip of first book arm just passes through folding assembly drive self rotates, makes the folding portion center on the central line of rotation portion is rotatory, in order to realize independently the expansion or the folding of electrode.

As an alternative to the above embodiment, the bending assembly includes a control portion and an actuating portion, the actuating portion is disposed at a hinge joint of the first folding arm and the second folding arm and is driven by the control portion, and the actuating portion is configured to drive the first folding arm to swing passively relative to the second folding arm.

As an alternative of the above embodiment, the actuating portion includes a driving member, a driven member and a locking member, the driven member is fixed to the first folding arm and has at least two locking grooves, the control portion drives the driven member to rotate through the driving member, the locking member is fixed to the second folding arm, the locking member is selectively inserted into one of the locking grooves and can be disengaged from the locking groove under the action of the driving member.

As an alternative of the above embodiment, the control portion includes a dial button, a gear and at least one brace, the dial button is rotatably disposed on the second folding arm, the gear is fixed in the dial button, one end of the brace is provided with a rack portion matched with the gear, and the other end of the brace is hinged to the driving member.

As an alternative to the above embodiment, the centre line of the turning part and the centre line of the folded part are parallel.

As an alternative to the above embodiment, a center line of the rotation portion is parallel to a center line of the first folding arm, and the at least two electrode assemblies are distributed around the center line of the first folding arm.

As an alternative to the above embodiment, the folding assembly comprises a transmission member and a folding knob, one end of the transmission member being fixed with the electrode and the other end being fixed with the folding knob.

As an alternative to the above embodiment, the transmission member is of a flexible tubular structure, and the transmission member includes a tubular body, and a first flexible portion is provided on the tubular body, and is provided at a hinge joint of the first folding arm and the second folding arm, and the first flexible portion is capable of bending and transmitting torque.

As an alternative to the above embodiment, the tube body is further provided with a second flexible portion adjacent to the folding knob, the second flexible portion being capable of bending and transmitting torque.

As an alternative to the above embodiment, the transmission member further includes a flexible insulating layer and an insulating hose, the flexible insulating layer covers an outer surface of the pipe body, the insulating hose is located inside the pipe body, and a first gap exists between the outer surface of the insulating hose and an inner surface of the pipe body; the electrode comprises an inner tube and an outer tube, the inner tube is located inside the outer tube, a second gap exists between the outer surface of the inner tube and the inner surface of the outer tube, the tail portion of the inner tube is communicated with the insulating hose, the head portion of the inner tube is communicated with the outer tube, and the first gap is communicated with the second gap so that the transmission piece forms a cooling medium circulation channel.

As an alternative to the above embodiment, the foldable hemostasis instrument further includes a revolution component, the revolution component includes a revolution knob and a rotation base, the rotation base is rotatably connected to the handle around a center line of the rotation base, the center line of the rotation base does not coincide with the center line of the folding knob, one end of the second folding arm is coaxially fixed with the rotation base, the revolution knob is rotatably matched with the handle, and the revolution knob is configured to drive the rotation base and the second folding arm to rotate synchronously.

The invention has the beneficial effects that:

the folding type hemostatic device provided by the invention controls the orientation of the electrode assembly through the support assembly, and the electrodes of the electrode assembly can rotate independently, so that the electrodes can change the orientation and can be unfolded or folded. The electrode has small volume when folded, can be conveniently inserted into a puncture outfit (with the inner diameter of 5-15mm) or an endoscope and enters a part needing hemostasis, has large volume when unfolded, and can realize powerful and effective hemostasis in an oversized range; moreover, the electrodes can rotate independently, and the plurality of electrodes have different arrangement modes, so that the hemostatic bag is suitable for hemostasis of parts with different shapes; in addition, the direction of the electrode is changed under the driving of the first folding arm, so that the tissue at different parts can be stopped bleeding, and the operation is simpler, more convenient and quicker.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 illustrates a schematic structural view of a foldable hemostatic device provided by an embodiment of the invention;

FIG. 2 shows a cross-sectional view of FIG. 1;

FIG. 3 shows a schematic structural view of the support assembly;

FIG. 4 shows a schematic view of the bent state of FIG. 3;

FIG. 5 is a schematic view showing the connection between the first folding arm and the second folding arm;

FIG. 6 is a schematic view showing the engagement of the first folding arm with the actuator;

FIG. 7 shows an exploded view of FIG. 6;

FIG. 8 is a schematic diagram showing the mating relationship between the driving member and the driven member;

FIG. 9 shows a schematic structural view of the active member;

fig. 10 shows a schematic structural view of the locking member;

fig. 11 shows a schematic configuration diagram of the control section;

FIG. 12 is a schematic view showing the fitting relationship of the control portion and the second folding arm;

fig. 13 shows a schematic view of the structure of the electrode assembly;

FIG. 14 is a schematic view showing the mating relationship of the electrode to the mount;

FIG. 15 is a schematic diagram showing the mating relationship of the working and return poles;

FIG. 16 shows a cross-sectional view of FIG. 14;

FIG. 17 shows a cross-sectional view of an electrode;

FIG. 18 shows the schematic view of FIG. 14 in a folded state;

FIG. 19 shows a schematic view of one of the deployment modes of the electrode;

FIG. 20 is a schematic view showing another way of deploying the electrodes;

FIG. 21 shows an enlarged partial schematic view of FIG. 13;

FIG. 22 is a schematic view of the structure of the tubular body;

FIG. 23 shows a hierarchy of transmission parts;

FIG. 24 is a schematic view showing a structure of a folding knob;

fig. 25 is a schematic view showing the mating relationship of the handle and the revolution assembly;

FIG. 26 shows a cross-sectional view of FIG. 25;

FIG. 27 shows an enlarged partial schematic view of FIG. 26;

FIG. 28 is a schematic view showing the fitting relationship of a rotary base, a handle, a water circuit separating assembly, etc.;

fig. 29 is a schematic view showing the fitting relationship of a handle, a folding knob, a water circuit separating assembly, and the like.

Icon:

10-a folding hemostatic device;

11-a handle; 12-a support assembly; 15-an electrode assembly; 18-a revolving assembly;

120-a first folding arm; 121-a second folding arm; 122-a bending assembly; 123-a control section; 124-an execution part; 125-dial button; 126-gear wheel; 127-a brace; 128-the active piece; 129-a follower; 130-a locking element; 131-locking groove; 132-a movable slot; 133-oscillating teeth; 134-tooth fixing; 135-a fixed tube; 136-a locking tongue; 137-a spring; 138-a transmission rod; 139-drive bore; 140-a stationary shell; 141-upper shell; 142-a lower shell; 143-a mounting cavity; 144-a rack portion; 145-a fixing member;

150-a folding assembly; 151-electrode; 152-a transmission member; 153-folding knob; 154-a rotating part; 155-fold; 156-a connecting portion; 157-a tube body; 158-a first flexible portion; 159 — a second flexible portion; 160-flexible insulating layer; 161-insulating hose; 162-an inner tube; 163-an outer tube; 164-a rigid portion; 166-water inlet; 167-water outlet; 168-a first bar groove;

180-revolution knob; 181-a rotating base; 182-half shell; 183-tail cap; 184-water circuit separation module; 185-first baffle ring; 186-second catch ring; 187-a drum; 188-end cap; 189-second strip-shaped groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, an embodiment of the present invention provides a folded hemostatic device 10, where the folded hemostatic device 10 is used to stop bleeding during a minimally invasive endoscopic procedure.

Specifically, the folding hemostatic device 10 is mainly composed of a handle 11, a support assembly 12, an electrode assembly 15, and a revolving assembly 18.

The following describes each component in turn in detail.

First, the handle 11 mainly functions to support the support member 12, the revolution member 18, and the like as a basis of the entire structure, and facilitates the worker's hand-held operation and the like.

The style of the handle 11 is not limited, and in the present embodiment, the handle 11 may adopt, but is not limited to, the following structure:

as shown in fig. 2, the handle 11 has a hollow mounting portion for accommodating a part of the component structure and a hand-held portion for being held by a worker.

To facilitate mounting of the support assembly 12, etc., the handle 11 may be divided into two half-shells 182, the two half-shells 182 being detachably connected and enclosing a mounting cavity.

Secondly, as the main body of the folding hemostatic device 10, the support member 12 mainly functions to connect the handle 11 and the electrode assembly 15, and can bring the electrode assembly 15 to a designated coagulation area.

The support assembly 12 may take on, but is not limited to, the following configurations:

referring to fig. 3, the supporting assembly 12 includes a first folding arm 120, a second folding arm 121 and a folding assembly 122.

Wherein the first folding arm 120 and the second folding arm 121

The first folding arm 120 and the pin are fixed, the second folding arm 121 and the pin are rotatably matched, or the second folding arm 121 and the pin are fixed, the first folding arm 120 and the second folding arm 121 are rotatably matched, so that the first folding arm 120 and the second folding arm 121 can rotate relatively.

The swing range of the first folding arm 120 relative to the second folding arm 121 is in a sector shape, and the maximum relative rotation angle range between the first folding arm 120 and the second folding arm 121 can be set as required, for example, the maximum relative rotation angle between the first folding arm 120 and the second folding arm 121 is 90 ° left and right, respectively, of course, in other embodiments, the maximum relative rotation angle between the first folding arm 120 and the second folding arm 121 can be smaller or larger, for example, 40 °, 60 °, 80 °, 110 °, 130 °, and the like, or the maximum relative rotation angle between the first folding arm 120 and the second folding arm 121 is different left and right.

The left and right in the above description is the relative swinging direction of the first folding arm 120 with respect to the second folding arm 121, for example, taking fig. 4 as an example, the first folding arm 120 is bent upward with respect to the second folding arm 121 to swing leftward, and correspondingly, the first folding arm 120 is bent downward with respect to the second folding arm 121 to swing rightward.

The material and type of the first folding arm 120 and the second folding arm 121 are not limited, in this embodiment, the first folding arm 120 and the second folding arm 121 both adopt a circular tubular structure, and the first folding arm 120 and the second folding arm 121 are hollow, so that other parts can be installed inside the first folding arm 120 and the second folding arm 121.

Of course, in other embodiments, the first folding arm 120 and the second folding arm 121 may be both solid structures, and the shape is not limited to a cylindrical shape.

In this embodiment, the center line of the first folding arm 120 and the center line of the second folding arm 121 are coincident or located in the same plane.

The second folding arm 121 is connected to the handle 11, an end of the second folding arm 121 can be inserted into the mounting cavity of the handle 11, and the first folding arm 120 is located at an end of the second folding arm 121 far away from the handle 11.

Referring to fig. 5, a fixing member 145 is disposed inside one end of the first folding arm 120, and the fixing member 145 may be a block structure, in this embodiment, the fixing member 145 is cylindrical and seals an end of the first folding arm 120, and the fixing member 145 is provided with a plurality of mounting through holes (in this embodiment, four mounting through holes are selected as shown in fig. 16), and the mounting through holes are communicated with the inside of the first folding arm 120.

Of course, the fixing member 145 may also have a regular shape such as a prism or other irregular shape, and the fixing member 145 may not be located inside the first folding arm 120. In addition, the fixing member 145 and the first folding arm 120 may be fixedly connected to each other or integrally formed with each other.

In this embodiment, the center line of the mounting through holes may be parallel to the center line of the first folding arm 120, and the four mounting through holes are uniformly distributed around the center line of the first folding arm 120, but in other embodiments, the center line of the mounting through holes and the center line of the first folding arm 120 may also be out of plane or intersect.

When the first folding arm 120 rotates relative to the second folding arm 121, the fixing member 145 may be driven to swing, the first folding arm 120 and the second folding arm 121 can be controlled to bend through the bending assembly 122, that is, under the condition that the second folding arm 121 remains stationary, the bending assembly 122 can drive the first folding arm 120 to bend relative to the second folding arm 121, and the bending assembly 122 may adopt, but is not limited to, the following structures:

the bending assembly 122 includes a control portion 123 and an executing portion 124, wherein the executing portion 124 is used for driving the first folding arm 120 to swing passively relative to the second folding arm 121, that is, when the second folding arm 121 is kept still, the first folding arm 120 can only swing under the action of the executing portion 124, and the first folding arm 120 cannot swing to drive the executing portion 124 to act, and the control portion 123 is used for controlling the action of the executing portion 124.

Referring to fig. 5, the actuating portion 124 is disposed at the hinge of the first folding arm 120 and the second folding arm 121.

The control unit 123 and the actuator 124 have various structures, and for example, a motor and gear transmission structure, a rack and pinion structure, and the like may be adopted.

Referring to fig. 6 and 7, in the present embodiment, the actuating portion 124 includes a driving member 128, a driven member 129 and a locking member 130.

Referring to fig. 8, the follower 129 is fixed to an end of the first folding arm 120, the follower 129 is provided with a plurality of fixing teeth 134, a locking groove 131 is formed between two adjacent fixing teeth 134, and the number of the locking grooves 131 is two or more.

The driving member 128 and the driven member 129 are disposed correspondingly, and the driving member 128 and the driven member 129 can rotate synchronously and relatively within a preset angle threshold range.

Specifically, in this embodiment, the pin is fixed to the first folding arm 120, the second folding arm 121 is rotatably engaged with the pin, the driven element 129 is fixed to the pin, and the driving element 128 is rotatably sleeved on the pin.

As shown in fig. 9, the driving member 128 and the driven member 129 are provided with driving rods 138 and driving holes 139 at corresponding positions, in this embodiment, two driving rods 138 are provided on the driving member 128, two driving holes 139 are provided on the driven member 129, and the driving rods 138 are inserted into the driving holes 139.

The size of the driving hole 139 is larger than that of the driving rod 138 so that the driving rod 138 has a certain free moving area during the rotation with the driving member 128. The transmission rod 138 can be a cylindrical structure, the transmission hole 139 can be a circular hole, and the diameter of the transmission hole 139 is larger than that of the transmission rod 138, however, the transmission rod 138 and the transmission hole 139 can also be other structures, for example, the transmission rod 138 is a cylindrical structure, the transmission hole 139 is an arc-shaped long circular hole, two transmission rods 138 are corresponding to two notches with opposite directions, and the like.

The driving member 128 is operated by the control portion 123 and drives the driven member 129 to rotate, the driven member 129 drives the first folding arm 120 to swing, and after the driven member 129 rotates to a designated position, the locking member 130 is inserted into the corresponding locking groove 131.

The driving member 128 may adopt a structure such as a cam, so that the driving member 128 can jack up the locking member 130 during rotation, and may also adopt a structure in which a plurality of movable teeth 133 are provided on the driving member 128, and a movable groove 132 is formed between two adjacent movable teeth 133.

The driving member 128 and the locking member 130 cannot be self-locked, the driven member 129 and the locking member 130 can be self-locked, and the locking member 130 can be driven to be disengaged from the locking groove 131 before the driving member 128 drives the driven member 129 to rotate, so that the driven member 129 can rotate.

In other words, the driving member 128 and the locking member 130 are not self-locking, which means that if the locking member 130 is inserted into the movable groove 132, the driving member 128 can push the locking member 130 open when rotating, that is, the locking member 130 can be pushed up by the tooth surface of the movable tooth 133, so that the locking member 130 can be disengaged from the movable groove 132. In order to achieve this function, the tooth profile of the movable tooth 133 may be circular arc, and of course, in other embodiments, the movable tooth 133 may also be a tooth surface with a smaller gradient, etc.

The follower 129 and the locking member 130 can be self-locked, that is, if the locking member 130 is inserted into the locking groove 131, the follower 129 cannot eject the locking member 130 without the influence of the driving member 128, that is, the locking member 130 cannot be ejected by the tooth surface of the fixed tooth 134, and the locking member 130 is always inserted into the fixing groove, so that the follower 129 cannot rotate.

To achieve the above effect, the locking member 130 may adopt, but is not limited to, the following structures: referring to fig. 10, the locking member 130 is adjacent to the active member 128, and the locking member 130 includes a fixing tube 135, a locking tongue 136, and a spring 137.

The fixing tube 135 is disposed inside the second folding arm 121, the locking tongue 136 is slidably disposed inside the fixing tube 135, the locking tongue 136 extends out from one end of the fixing tube 135, and the thickness of the end of the locking tongue 136 is gradually reduced.

A spring 137 is located within the fixed tube 135 and gives the locking bolt 136 a tendency to move towards the follower 129.

The actuator 124 is driven by the controller 123, and in the present embodiment, as shown in fig. 11 and 12, the controller 123 includes a fixed housing 140, a dial 125, a gear 126, and a pull strip 127.

Specifically, the second arm 121 that rolls over is located to set casing 140 cover, dials the rotatable setting in set casing 140 of button 125, dials button 125 and set casing 140's corresponding position, can set up scale and pointer etc to the staff accurately learns the angle of bending of first arm 120.

The gear 126 and the dial 125 are coaxially fixed, and the dial 125 can drive the gear 126 to rotate.

One end of the stay 127 is provided with a rack portion 144 matching the gear 126 and the other end is hinged with the driving member 128.

When the knob 125 is screwed, the knob 125 drives the gear 126 to rotate, the gear 126 drives the rack portion 144 and the brace 127 to move, and the brace 127 drives the driving member 128 to rotate.

The two braces 127 may be provided, and the same end of the two braces 127 is oppositely disposed on the driving member 128, and the other end thereof is also engaged with the gear 126 through the respective rack portion 144.

When the knob 125 is screwed, the knob 125 drives the gear 126 to rotate, the gear 126 drives the rack portion 144 and the pull bars 127 to move, and the two pull bars 127 move in opposite directions, so as to drive the driving member 128 to rotate.

The fixed case 140 is divided into an upper case 141 and a lower case 142 which are detachably coupled, the upper case 141 and the lower case 142 are detachable, and the upper case 141 is provided with a mounting cavity 143 for mounting the dial knob 125 and the gear 126.

The structure of the fixing case 140 makes the control part 123 more conveniently detached.

The support assembly 12 is mainly used for fixing and driving the electrode assembly 15 to move, and the electrode assembly 15 mainly plays a role in hemostasis. The electrode assembly 15 may adopt, but is not limited to, the following structure:

referring to fig. 13, the electrode assembly 15 includes a folded assembly 150 and a plurality of electrodes 151. in one embodiment, the plurality of electrodes 151 are all unipolar electrodes, i.e., each electrode is a working electrode, and in this case, a negative plate is required for practical operation. In the present embodiment, the number of the electrodes 151 is four. In other embodiments, the number of the electrodes 151 may also be two, three, five, or the like, and repeated experiments by researchers show that the electrodes are limited by limitations of the operation under the mirror, and when the number of the electrodes 151 is four, the efficiency is high, and the hemostatic effect is good.

Referring to fig. 14, in the present embodiment, the electrodes 151 are connected to the fixing member 145, and the four electrodes 151 are distributed in a rectangular shape.

Referring to fig. 15, in another preferred embodiment, the electrodes 151 are divided into working electrodes and return electrodes, in this way, one working electrode and one return electrode form one group of electrodes 151, and at least one group of electrodes 151 is provided, and the number of the groups is 1 group, 2 groups or 3 groups. When the bending structure is selected according to the caliber size of the endoscope, i.e. the number of the electrode 151 groups is 1, the electrode 151 is not required to be provided with the bending structure, and the electrode 151 with the bending structure is only required when the applicable puncture outfit (the inner diameter is 5-15mm) or the endoscope has a small caliber. When the electrodes 151 are arranged in a row, the distance between the working electrode and the return electrode in the same group is 5-12mm, the diameter of each electrode 151 is 1-3mm, and the length of each electrode 151 exposed out of the fixing member 145 or the first folding arm 120 is 3-10 cm. As used herein, "distal" refers to the end closer to the site of action during an endoscopic procedure.

When a plurality of sets of electrodes 151 are provided, the working electrodes and the return electrodes are alternately arranged, and the electrodes 151 are insulated from each other. The alternating arrangement of the working and return electrodes allows the coagulation zones created between the electrodes 151 to be interconnected to create a larger coagulation zone.

Of course, in an alternative embodiment, the "working electrode/return electrode/working electrode" or "return electrode/working electrode/return electrode" can also be used. The coagulation zones generated in this way are disconnected and no better coagulation zones are formed between the different groups.

Under the action of the radio frequency host, the on-off of high-frequency current is controlled by a foot controller or manually, and the high-frequency current flows between the working pole and the loop pole. Because the tissue has certain impedance, the high-frequency current can generate heat when flowing through the tissue, and the heat can cause the tissue spiral protein to shrink and dehydrate, so that the blood vessel is closed, thereby realizing the function of hemostasis. The electrode 151 itself does not heat up during hemostasis, which results from the heat generated by "ohmic heating" of the current flowing through the tissue.

As shown in fig. 16, the electrode 151 includes a rotating portion 154, a connecting portion 156, and a folding portion 155, which are connected in sequence.

The rotating portion 154 is inserted into the mounting through hole of the fixing block, and the rotating portion 154 can rotate around its center line. It should be noted that the rotating portion 154 can only rotate and cannot slide along its center line.

The folding portion 155 is connected to the rotating portion 154 through the connecting portion 156, and the rotating portion 154 can drive the folding portion 155 to rotate around the center line of the rotating portion 154 during the rotation process. When the electrodes 151 are arranged in a row, the distance between the distal ends of the folded portions 155 of the same set of working and return electrodes is 5-12 mm.

The center line of the folded portion 155 does not coincide with the center line of the rotating portion 154, and the center line of the folded portion 155 and the center line of the rotating portion 154 may be different from each other, intersect each other, and the like.

The connecting portion 156 is used to connect the rotating portion 154 and the folded portion 155.

The shape of the connecting portion 156 is not limited, and for example, the connecting portion 156 has a curved structure, a linear structure, or the like, and in the present embodiment, the connecting portion 156 has a linear structure.

The angle between the center line of the connecting portion 156 and the center line of the rotating portion 154 and the angle between the center line of the connecting portion 156 and the center line of the folded portion 155 are not limited. For example, the connection portion 156 is perpendicular to the rotation portion 154 and the folded portion 155, the angle between the center line of the connection portion 156 and the center line of the rotation portion 154, and the angle between the center line of the connection portion 156 and the center line of the folded portion 155 are obtuse angles, and the like.

In the present embodiment, the angle between the center line of the connecting portion 156 and the center line of the rotating portion 154 is an obtuse angle, and the angle between the center line of the connecting portion 156 and the center line of the folding portion 155 is an obtuse angle, and the angle of the obtuse angle can be controlled between 120 ° and 150 °, such as 120 °, 135 °, 150 °, and the like.

Such an angular range allows the different electrodes 151 to be independently rotated without interference with each other, thereby allowing the electrodes 151 to be rotated 360 ° about the center line of the rotating part 154.

When the electrodes 151 rotate around the central line of the rotating part 154, the electrodes 151 can be independently unfolded or folded, and the rotation of different electrodes 151 does not interfere with each other, that is, when one of the electrodes 151 rotates, whether the other electrodes 151 rotate, and the rotation direction and the rotation angle are not affected.

The points to be explained are: the unfolding or folding of the electrode 151 means that the distance between the center line of the folded portion 155 and the center line of the fixing member 145 (in the present embodiment, it may be considered as the center line of the first folding arm 120) increases or decreases as the electrode 151 rotates. The electrode 151 is unfolded in a limit state in which the distance between the center line of the folded portion 155 and the center line of the fixed block is the largest, and the electrode 151 is folded in a limit state in which the distance between the center line of the folded portion 155 and the center line of the fixed block is the smallest.

The connection portion 156 and the rotation portion 154 and the connection portion 156 and the folding portion 155 are smoothly transited.

In addition, in order to facilitate the operation under the mirror as much as possible, it is necessary to control the four electrodes 151 in the folded state not to exceed the diameter range of the first folding arm 120 or the fixing member 145.

The electrode 151 is bent as a whole and has a hollow interior, and specifically, as shown in fig. 17, the electrode 151 includes an inner tube 162 and an outer tube 163.

The inner tube 162 and the outer tube 163 may be made of a metal material, and the single electrode 151 is assembled with the inner tube 162 and the outer tube 163, welded, and then bent.

The inner tube 162 is located inside the outer tube 163, wherein a certain distance is provided between the head of the inner tube 162 and the head of the outer tube 163, and the outer surface of the inner tube 162 has a second gap between the inner surface of the outer tube 163.

The inner pipe 162 is provided at the rear thereof with a water inlet 166 and at the head thereof communicating with the outer pipe 163, and the outer pipe 163 is closed at the head thereof with a water outlet 167, so that the inner pipe 162 and the outer pipe 163 constitute a first cooling medium circulation passage.

It should be noted that: the head and tail of the outer tube 163 and the inner tube 162 are relative, the tail being the end of the electrode 151 near the handle 11, i.e. the end away from the coagulation zone during operation; the head is the end of the electrode 151 remote from the handle 11, i.e. the end which is inserted into the coagulation zone during operation. In the orientation of fig. 17, the left side is the tail of the outer tube 163 and the inner tube 162, and the right side is the head of the outer tube 163 and the inner tube 162.

The tail of the outer tube 163 and the outer surface of the inner tube 162 are sealed, and the sealing manner is not limited, for example, the tail of the outer tube 163 and the inner tube 162 may be sealed by a welding process.

The number of the water outlets 167 is plural and is uniformly distributed along the circumferential direction of the outer tube 163.

Flow pattern of cooling liquid inside electrode 151: the cooling liquid enters the inner pipe 162 from the rear of the inner pipe 162, flows out from the head of the inner pipe 162 and enters the head of the outer pipe 163, then enters the rear of the outer pipe 163, and finally flows along the second gap between the inner pipe 162 and the outer pipe 163 and flows out from the water outlet 167.

The current density around the electrode 151 is much greater than the density at the distance, which results in the tissue around the electrode 151 being more likely to dehydrate and dry out, and if the tissue around the electrode 151 dehydrates and dry out too early, the current cannot be transmitted to the tissue at the distance, so that the tissue at the distance cannot be hemostatically treated, and the hemostasis range is greatly reduced.

And each electrode 151 of the hemostatic device has an internal fluid circulation function; when the water inlet pipe is connected with cooling liquid (which can be but is not limited to physiological saline), the water outlet 167 is communicated with the suction device, and the cooling liquid can flow through the whole interior of the electrode 151, so as to take away heat of the electrode 151; the temperature of the electrode 151 is not too high (kept at about 25 ℃), so that the tissues around the electrode 151 are not dried and knotted too early, the phenomenon of sticking a knife is not easy to occur, and at the moment, the current can be transmitted out, so that the tissues at a distance generate heat, dehydrate and stop bleeding.

In addition, in other embodiments, the water outlet 167 may be disposed at other positions, for example, the water outlet 167 may be disposed at the middle of the rotating portion 154 or at the intersection of the connecting portion 156 or the folding portion 155 and the connecting portion 156. However, at this time, the water outlet 167 is not convenient for communicating with a suction device, and the cooling liquid can only flow out from the water outlet 167, and acts on the portion to be treated, and the waste water is sucked out of the body by the suction device alone.

To facilitate insertion of the electrode 151 into tissue, the head of the outer tube 163 is tapered to a pointed shape.

In addition, the outer surface of the electrode 151 may be provided with graduations, which may allow a worker to know the depth of insertion of the electrode 151 into tissue.

Referring to fig. 18, in the embodiment, four electrodes 151 are adopted, and after the electrodes 151 are completely folded, the folded portions 155 of the four electrodes 151 are gathered together and are closer to the center line of the fixing member 145, and the four electrodes 151 do not exceed the diameter range of the first folding arm 120.

Referring to fig. 19 and 20, as the electrodes 151 rotate, the folded portions 155 of the four electrodes 151 may be arranged in various ways, such as a straight line, an arc, a rectangle, etc.

The rotation of the electrode 151 is achieved by the folding assembly 150, and the folding assembly 150 is used to drive the electrode 151 of the electrode assembly 15 to rotate, thereby folding or unfolding the electrode assembly 15.

The folding assembly 150 may take the following configurations, but is not limited to:

referring to fig. 2, 13, 15 and 21, the folding assembly 150 includes a folding knob 153 and a transmission member 152, the folding knob 153 is rotatably connected to the handle 11, one end of the transmission member 152 is connected to the rotating portion 154, and the other end is connected to the folding knob 153. When the folding knob 153 rotates, the electrode 151 can be driven to rotate by the transmission member 152.

Since the first folding arm 120 and the second folding arm 121 can be folded, in order to adapt to this structure, in this embodiment, the transmission member 152 is a flexible tubular structure, specifically, as shown in fig. 22, the transmission member 152 includes a tubular body 157, the tubular body 157 can be made of a metal material, and the tubular body 157 includes a rigid portion 164 and a first flexible portion 158.

The rigid portion 164 is not deformable, the first flexible portion 158 is disposed at the hinge of the first folding arm 120 and the second folding arm 121, and the first flexible portion 158 can bend and transmit torque. The first folding arm 120 and the second folding arm 121 are bent, and the first flexible portion 158 follows the bending, so that the torque transmission of the folding assembly 150 is not affected.

In addition, since the diameters of the first folding arm 120 and the second folding arm 121 are small and the transmission member 152 is located inside the two, the number of the transmission members 152 is large, so that the distance between the transmission members 152 is small, and the control is not easy.

The second flexible portion 159 is located outside the second folding arm 121, and the second flexible portion 159 allows the distance between the transmission members 152 to be increased as necessary to prevent mutual interference.

The pipe body 157 is a circular metal pipe, and the first flexible portion 158 and the second flexible portion 159 are formed in a spiral shape by a spiral cutting process.

Of course, in other embodiments, the first flexible portion 158 and the second flexible portion 159 may take other configurations.

In addition, referring to fig. 23, the transmission member 152 further includes a flexible insulation layer 160 and an insulation hose 161.

The flexible insulating layer 160 covers the outer surface of the tube body 157, the insulating hose 161 is located inside the tube body 157, a first gap exists between the outer surface of the insulating hose 161 and the inner surface of the tube body 157, and when the water outlet 166 is arranged at the tail of the outer tube 163, the flexible insulating layer 160 and the insulating hose 161 enclose a second cooling medium circulation channel.

The tail part of the inner pipe 162 is communicated with the insulating hose 161, and the first gap and the second gap are communicated through the water outlet 167, that is, the first cooling medium circulation channel and the second cooling medium circulation channel are communicated to form a complete cooling medium circulation channel.

Referring to fig. 24, the outer surface of the folding knob 153 is provided with a plurality of first bar-shaped grooves 168 for facilitating screwing by a worker. A plurality of first bar-shaped grooves 168 are uniformly distributed along the circumferential surface of the folding knob 153, the bar-shaped grooves extending in the axial direction of the folding knob 153.

The folding assembly 150 enables the electrode assembly 15 to rotate, and in some specific environments, the requirements cannot be met well, for example, hemostasis is performed at different positions and the arrangement of the electrodes 151 needs to be the same, which can only be achieved by rotating the handle 11, the rotation of the handle 11 can affect the operation of the worker, and at this time, the revolving assembly 18 is needed to transfer the electrode assembly 15. The revolving assembly 18 may employ, but is not limited to, the following:

the revolution assembly 18 serves to integrally rotate the support assembly 12 and the electrode assembly 15 with respect to the handle 11.

As shown in fig. 25 and 26, the revolution component 18 includes a rotary base 181 and a revolution knob 180.

The rotating base 181 is located in the installation cavity 143, the rotating base 181 can rotate around its center line, the center line of the rotating base 181 does not coincide with the center line of the folding knob 153, one end of the second folding arm 121 is coaxially fixed with the rotating base 181, in this embodiment, the center line of the second folding arm 121 coincides with the center line of the rotating base 181, and the second folding arm 121 is inserted into the rotating base 181.

The revolution knob 180 is rotatably engaged with the handle 11, and the revolution knob 180 can drive the rotating base 181 and the second folding arm 121 to rotate synchronously.

The folding knob 153 is connected to the rotary base 181, and the folding knob 153 can rotate around its center line, and the center line of the folding knob 153 is not coincident with the center line of the rotary base 181, and in this embodiment, the center line of the rotation knob is parallel to the center line of the rotary base 181.

With the handle 11 kept stationary, the rotary seat 181 can only rotate around its own central line, and during the rotation, the rotary seat 181 can drive the folding knob 153, the second folding arm 121, and the like to rotate, i.e., the folding knob 153, the second folding arm 121, and the like revolve, and the folding knob 153 can also rotate around its own central line, i.e., the folding knob 153, the transmission member 152, the electrode 151, and the like rotate.

The folding knob 153, the electrode 151, and the like are rotated and revolved in cooperation with each other, so that the electrode 151 can be rotated independently, and the orientations of the bent first folding arm 120 and the electrode 151 can be changed.

In this embodiment, please refer to fig. 27, a first blocking ring 185 is disposed on an outer surface of the rotating base 181, the first blocking ring 185 is disposed along a circumferential direction of the rotating base 181, a second blocking ring 186 matching with the first blocking ring 185 is disposed inside the handle 11, and the first blocking ring 185 and the second blocking ring 186 are fastened and fixed to each other.

The rotary base 181 can be further divided into a drum 187 and an end cap 188, wherein one end of the drum 187 is a closed end and the other end is an open end, the support member extends into the drum 187 from the closed end, and the end cap 188 covers the open end.

The outer surface of the revolution knob 180 is provided with a plurality of second bar-shaped grooves 189, and the second bar-shaped grooves 189 extend in the axial direction of the revolution knob 180.

In addition, referring to fig. 28 and 29, the foldable hemostatic device 10 may further include a tail cap 183, and one end of the folding knob 153 is connected to the tail cap 183.

A water circuit separation component 184 is arranged in the tail cover 183, and the transmission piece 152 is communicated with the interior of the water circuit separation component 184.

Water circuit separation assembly 184 is used to separate the water circuit from the electrical circuit. In one embodiment, the water circuit may be separated in the following manner:

the water circuit separation component 184 is a water collection bin, the cooling liquid heated and refluxed is conveyed to the water collection bin through a cooling medium circulation channel, and the water collection bin is communicated with a suction device through a suction pipeline; and one end of the pipe body 157 close to the water collecting bin is electrically connected with the host machine through an insulated cable sealed by welding.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.