阅读说明：本技术 一种心胸外科手术的持针钳 (Needle holding forceps for cardiothoracic surgery ) 是由 周康平 于 2020-06-15 设计创作，主要内容包括：本发明公开了一种心胸外科手术的持针钳,主要包括钳头及驱动所述钳头开合的驱动部,所述驱动部主要包括拉杆及手柄组件,所述拉杆设置在中空外管内且可相对于该中空外管前后移动,所述拉杆的一端与钳头连接,另一端通过拉杆连接座与手柄组件连接并在手柄组件的驱动下带动钳头完成开合动作；所述手柄组件主要包括弹簧手柄及手柄连接片,所述弹簧手柄包括上弹片和下弹片,且上弹片和下弹片的内侧均铰接设置有手柄连接片,所述上弹片和下弹片分别通过手柄连接片带动拉杆前后移动,所述上弹片的内壁上轴向设置有手柄锁,所述下弹片上设置有与所述上弹片的手柄锁相互配合的锁扣,所述手柄锁可以卡接在锁扣内将上弹片和下弹片固定从而使得钳头保持闭合。(The invention discloses a needle holding forceps for cardiothoracic surgery, which mainly comprises a forceps head and a driving part for driving the forceps head to open and close, wherein the driving part mainly comprises a pull rod and a handle assembly; the handle assembly mainly comprises a spring handle and a handle connecting piece, the spring handle comprises an upper elastic sheet and a lower elastic sheet, the inner sides of the upper elastic sheet and the lower elastic sheet are hinged to be provided with the handle connecting piece, the upper elastic sheet and the lower elastic sheet drive the pull rod to move back and forth through the handle connecting piece respectively, a handle lock is axially arranged on the inner wall of the upper elastic sheet, a lock catch which is matched with the handle lock of the upper elastic sheet is arranged on the lower elastic sheet, and the handle lock can be connected with the upper elastic sheet and the lower elastic sheet in a clamping manner to fix the upper elastic sheet and the lower elastic.)

1. The utility model provides a needle-holding forceps of cardiothoracic surgery operation, mainly includes binding clip and drive the binding clip opens and shuts in order to accomplish the drive division of getting the action, its characterized in that: the driving part mainly comprises a pull rod and a handle assembly for driving the pull rod to move back and forth, the pull rod is arranged in the hollow outer tube and can move back and forth relative to the hollow outer tube, and a pull rod connecting seat connected with the pull rod is arranged on one side of the hollow outer tube, which is far away from the binding clip; one end of the pull rod is connected with the tong head, and the other end of the pull rod is connected with the handle assembly through the pull rod connecting seat and drives the tong head to complete opening and closing actions under the driving of the handle assembly; the handle assembly mainly comprises a spring handle and a handle connecting piece, the spring handle comprises an upper elastic piece and a lower elastic piece which are arranged in a V shape, the inner sides of the upper elastic piece and the lower elastic piece are hinged to be provided with the handle connecting piece, the upper elastic piece and the lower elastic piece drive a pull rod to move back and forth through the handle connecting piece respectively, a handle lock is axially arranged on the inner wall of one side of the lower elastic piece, a lock catch which corresponds to the handle lock position of the lower elastic piece and can be matched with each other is arranged on the upper elastic piece, and the handle lock can be connected with the upper elastic piece and the lower elastic piece in the lock catch in a clamping manner to fix the upper elastic.

2. The needle holder according to claim 1, wherein: the handle lock mainly comprises a first mounting seat and a U-shaped lock arranged on the mounting seat, wherein a steel needle is fixedly arranged on the inner wall of one side of the U-shaped lock, a sliding groove is transversely arranged on the inner wall of the other side of the U-shaped lock in a penetrating manner, the steel needle penetrates through the sliding groove and extends towards one side of the binding clip, and the steel needle can move left and right in the sliding groove under the action of external force; the lock catch mainly comprises a second mounting seat and a lock catch body arranged on the mounting seat, the lock catch body comprises a triangular connecting seat arranged transversely and a clamping part arranged at the top of the triangular connecting seat, an outward inclined edge is arranged at the top of the outer side of the clamping part, a hook groove used for clamping a steel needle is arranged at the bottom of the inclined edge, and an arc-shaped rebound edge is arranged at the inner side of the clamping part; when mediating spring handle, the steel needle is merging the emergence displacement in the spout with the subsides of slope limit, continue spring handle, the steel needle bullet goes into hook inslot and joint, thereby make spring handle closure keep the binding clip closed, continue to mediate spring handle again, steel needle downstream takes place the displacement in the spout, kick-back when the steel needle breaks away from the outside of joint portion and with the inboard convex limit contact of kick-backing of joint portion, loosen spring handle, then the steel needle kick-backs to original position, spring handle opens and drives the binding clip and open.

3. The needle holder according to claim 2, wherein: be provided with the guide post that is used for location and direction on the first mount pad, be provided with on the second mount pad with the guide post position corresponds and the guide cylinder of mutually supporting, when the spring handle is kneaded dough, the guide post can peg graft in the guide cylinder.

4. The needle holder according to claim 3, wherein: the front side of pull rod connecting seat is provided with the connecting rod of being connected with the pull rod, go up the shell fragment and all include the shell fragment body and set up the handle shell on the shell fragment body down, go up the shell fragment and down the shell fragment respectively through handle connection piece with the connecting rod be connected and drive the pull rod back-and-forth movement through the connecting rod, the shell fragment body of going up shell fragment and lower shell fragment is in the one side fixed connection of keeping away from the handle shell, the shell fragment body sets up on the pull rod connecting seat and can be for the pull rod connecting seat back-and-forth movement.

5. Needle holder according to any one of claims 1 to 4, characterized in that: the spring handle is characterized in that a washing seat is arranged on one side, close to the spring handle, of the hollow outer pipe, a water inlet is formed in the washing seat, when the washing is needed, a water source is introduced from the water inlet and flows into the hollow outer pipe, and finally flows out from the connecting end face of the hollow outer pipe and the tong head, so that the tong head is washed.

6. Needle holder according to claim 5, characterized in that: thereby be provided with on the afterbody outer wall of pull rod connecting seat and adjust the opening adjusting nut of binding clip angle that opens through adjusting spring handle opening, the afterbody of pull rod connecting seat is provided with the external screw thread, thereby opening adjusting nut connects soon on the external screw thread of pull rod connecting seat afterbody and adjusts spring handle opening through adjusting the relative position of spring handle on the pull rod connecting seat.

7. Needle holder according to claim 6, characterized in that: the outer tip of pull rod connecting seat is provided with the clamping-force adjusting nut that can adjust binding clip clamping-force, is provided with adjusting screw in this clamping-force adjusting nut, clamping-force adjusting nut passes through positive screw-thread fit with the pull rod, and during clockwise rotation clamping-force adjusting nut, pull rod length shortens, makes the line pull rod displacement volume diminish, and the pressure grow down when kneading the spring handle for the also corresponding grow of binding clip clamping-force, thereby adjusting screw can with the pull rod top close the clamping-force of fixed binding clip.

8. Needle holder according to claim 6 or 7, characterized in that: the binding clip comprises an upper binding clip sheet which is hinged with the pull rod and can be opened or closed under the driving of the pull rod and a lower binding clip sheet which is fixedly arranged on the hollow outer tube and is matched with the upper binding clip sheet.

9. The needle holder according to claim 8, wherein: alloy tungsten steel sheets are arranged on the opposite surfaces of the upper tong head sheet and the lower tong head sheet.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a needle holder for cardiothoracic surgery.

Background

The surgery is a science for researching the occurrence, development law and clinical manifestations, diagnosis, prevention and treatment of surgical diseases, is a professional department taking surgical excision and repair as main treatment means, and is greatly developed along with the application of microsurgery technology, the special setting principle of the surgery in each hospital is similar to that of the internal medicine, generally corresponding to the internal medicine, and the surgical diseases are divided into five categories: trauma, infection, tumor, deformity and dysfunction.

With the continuous development of surgical medical technology, surgical medical instruments are also very important, good surgical medical instruments can improve the success rate of operations and facilitate the use of medical personnel, needle holders are common medical instruments for medical personnel during the operation process, are also called needle holders and are common surgical instruments for clinical medicine and surgical operation, are mainly used for clamping suture needles and suturing various tissues, but the existing needle holders are single in structure, are large in opening and closing of handles and forceps when in use, are direct in torque transmission, are poor in controllability and comfort of operation, are large in limitation of the use environment and lack of flexibility of small-space operation.

Disclosure of Invention

The invention aims to solve the technical problem of providing a needle holding forceps for cardiothoracic surgery, which has stable structure, convenient operation and better use effect and aims to overcome the defects in the prior art.

The invention aims to complete the following technical scheme, and the needle holding forceps for cardiothoracic surgery mainly comprise a forceps head and a driving part for driving the forceps head to open and close so as to complete clamping action, wherein the driving part mainly comprises a pull rod and a handle assembly for driving the pull rod to move back and forth, the pull rod is arranged in a hollow outer tube and can move back and forth relative to the hollow outer tube, and one side of the hollow outer tube, which is far away from the forceps head, is provided with a pull rod connecting seat connected with the pull rod; one end of the pull rod is connected with the tong head, and the other end of the pull rod is connected with the handle assembly through the pull rod connecting seat and drives the tong head to complete opening and closing actions under the driving of the handle assembly; the handle assembly mainly comprises a spring handle and a handle connecting piece, the spring handle comprises an upper elastic piece and a lower elastic piece which are arranged in a V shape, the inner sides of the upper elastic piece and the lower elastic piece are hinged to be provided with the handle connecting piece, the upper elastic piece and the lower elastic piece drive a pull rod to move back and forth through the handle connecting piece respectively, a handle lock is axially arranged on the inner wall of one side of the lower elastic piece, a lock catch which corresponds to the handle lock position of the lower elastic piece and can be matched with each other is arranged on the upper elastic piece, and the handle lock can be connected with the upper elastic piece and the lower elastic piece in the lock catch in a clamping manner to fix the upper elastic.

Furthermore, the handle lock mainly comprises a first mounting seat and a U-shaped lock arranged on the mounting seat, a steel needle is fixedly arranged on the inner wall of one side of the U-shaped lock, a sliding groove is transversely arranged on the inner wall of the other side of the U-shaped lock in a penetrating manner, the steel needle penetrates through the sliding groove and extends towards one side of the forceps head, and the steel needle can move left and right in the sliding groove under the action of external force; the lock catch mainly comprises a second mounting seat and a lock catch body arranged on the mounting seat, the lock catch body comprises a triangular connecting seat arranged transversely and a clamping part arranged at the top of the triangular connecting seat, an outward inclined edge is arranged at the top of the outer side of the clamping part, a hook groove used for clamping a steel needle is arranged at the bottom of the inclined edge, and an arc-shaped rebound edge is arranged at the inner side of the clamping part; when mediating spring handle, the steel needle is merging the emergence displacement in the spout with the subsides of slope limit, continue spring handle, the steel needle bullet goes into hook inslot and joint, thereby make spring handle closure keep the binding clip closed, continue to mediate spring handle again, steel needle downstream takes place the displacement in the spout, kick-back when the steel needle breaks away from the outside of joint portion and with the inboard convex limit contact of kick-backing of joint portion, loosen spring handle, then the steel needle kick-backs to original position, spring handle opens and drives the binding clip and open.

Furthermore, a guide post for positioning and guiding is arranged on the first mounting seat, a guide cylinder which corresponds to the guide post in position and is matched with the guide post is arranged on the second mounting seat, and when the spring handle is pinched, the guide post can be inserted into the guide cylinder.

Furthermore, the front side of the pull rod connecting seat is provided with a connecting rod connected with the pull rod, the upper elastic sheet and the lower elastic sheet both comprise elastic sheet bodies and handle shells arranged on the elastic sheet bodies, the upper elastic sheet and the lower elastic sheet are respectively connected with the connecting rod through handle connecting pieces and drive the pull rod to move back and forth through the connecting rod, the elastic sheet bodies of the upper elastic sheet and the lower elastic sheet are fixedly connected with one side of the handle shell far away, and the elastic sheet bodies are arranged on the pull rod connecting seat and can move back and forth relative to the pull rod connecting seat.

Furthermore, one side of the hollow outer pipe, which is close to the spring handle, is provided with a flushing seat, a water inlet is formed in the flushing seat, when the flushing is needed, a water source is introduced from the water inlet and flows into the hollow outer pipe, and finally flows out from the connecting end face of the hollow outer pipe and the binding clip, so that the binding clip is flushed.

Furthermore, thereby be provided with on the afterbody outer wall of pull rod connecting seat and adjust the opening adjusting nut of binding clip angle that opens through adjusting spring handle opening, the afterbody of pull rod connecting seat is provided with the external screw thread, thereby opening adjusting nut connects soon on the external screw thread of pull rod connecting seat afterbody and adjusts spring handle opening through adjusting the relative position of spring handle on the pull rod connecting seat.

Furthermore, the outer end part of the pull rod connecting seat is provided with a clamping force adjusting nut capable of adjusting the clamping force of the binding clip, an adjusting screw is arranged in the clamping force adjusting nut, the clamping force adjusting nut and the pull rod are in positive thread fit, when the clamping force adjusting nut is rotated clockwise, the length of the pull rod is shortened, the displacement of the pull rod is reduced, the downward pressure is increased when the spring handle is kneaded, the clamping force of the binding clip is correspondingly increased, and the adjusting screw can be abutted with the pull rod to fix the clamping force of the binding clip.

Furthermore, the binding clip comprises an upper binding clip sheet which is hinged with the pull rod and can be opened or closed under the driving of the pull rod, and a lower binding clip sheet which is fixedly arranged on the hollow outer tube and is matched with the upper binding clip sheet.

Furthermore, alloy tungsten steel sheets are arranged on the opposite surfaces of the upper tong head sheet and the lower tong head sheet.

The invention has the beneficial technical effects that: the invention has simple and compact structure, overcomes the problem that the prior surgical scissors need larger operation space, and leads the pull rod to generate backward pull force through the handle component and then leads the pull rod to transmit the force to the forceps head so as to lead the forceps head to generate clamping force. After clamping is finished, the hand holding force is adjusted, the handles are outwards bounced through the elasticity of the spring handles, and the pull rod generates forward thrust to open the tong heads; the clamping effect is better, the needle forceps are more suitable for narrow part surgery, and simultaneously the problem that the existing needle forceps cause discomfort to fingers when used for a long time is solved; in addition, the invention also has the self-locking function and the function of flushing the needle-holding forceps so as to avoid the influence of blood adhesion or coagulation of the forceps head on the operation.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the driving part according to the present invention;

FIG. 3 is a schematic view of the overall structure of the binding clip of the present invention;

FIG. 4 is a schematic view of the overall structure of the handle lock of the present invention;

fig. 5 is a schematic view of the overall structure of the lock of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inside", "outside", "lateral", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1-5, the needle holding forceps for cardiothoracic surgery according to the present invention mainly includes a forceps head 1 and a driving portion for driving the forceps head 1 to open and close to complete a clamping action, the driving portion mainly includes a pull rod 2 and a handle assembly 3 for driving the pull rod 2 to move forward and backward, the pull rod 2 is disposed in a hollow outer tube 4 and can move forward and backward relative to the hollow outer tube 4, and a pull rod connecting seat 5 connected to the pull rod 2 is disposed on a side of the hollow outer tube 4 away from the forceps head 1; one end of the pull rod 2 is connected with the binding clip 1, and the other end of the pull rod is connected with the handle component 3 through the pull rod connecting seat 5 and drives the binding clip 1 to complete opening and closing actions under the driving of the handle component 3; handle assembly 3 mainly includes spring handle 31 and handle connection piece 32, spring handle 31 is including last shell fragment and the lower shell fragment that is the V-arrangement setting, and the inboard of going up shell fragment and lower shell fragment all articulates and is provided with handle connection piece 32, it drives 2 back-and-forth movements of pull rod through handle connection piece 32 respectively with lower shell fragment to go up the shell fragment, the axial is provided with handle lock 6 on one of them side inner wall of shell fragment down, go up be provided with on the shell fragment with 6 positions of handle lock of shell fragment correspond and can mutually support hasp 7, thereby handle lock 6 can the joint make binding clip 1 keep closed with shell fragment and lower shell fragment fixed in hasp 7.

Referring to fig. 4-5, the handle lock 6 mainly includes a first mounting seat 61 and a U-shaped lock 62 disposed on the mounting seat, a steel needle 63 is fixedly disposed on an inner wall of one side of the U-shaped lock 62, a sliding slot 64 is transversely formed on an inner wall of the other side of the U-shaped lock 62, the steel needle 63 passes through the sliding slot 64 and extends to one side of the forceps head, and the steel needle 63 can move left and right in the sliding slot 64 under the action of external force; the lock catch 7 mainly comprises a second mounting seat 71 and a lock catch body arranged on the mounting seat, the lock catch body comprises a triangular connecting seat 72 transversely arranged and a clamping part 73 arranged at the top of the triangular connecting seat 72, an inclined edge 74 inclining outwards is arranged at the top of the outer side of the clamping part 73, a hook groove 75 for clamping a steel needle is arranged at the bottom of the inclined edge 74, and an arc-shaped rebound edge 76 is arranged at the inner side of the clamping part 73; when mediating spring handle, the steel needle is merging the emergence displacement in the spout with the subsides of slope limit, continue spring handle, the steel needle bullet goes into hook inslot and joint, thereby make spring handle closure keep the binding clip closed, continue to mediate spring handle again, steel needle downstream takes place the displacement in the spout, kick-back when the steel needle breaks away from the outside of joint portion and with the inboard convex limit contact of kick-backing of joint portion, loosen spring handle, then the steel needle kick-backs to original position, spring handle opens and drives the binding clip and open. The first mounting seat 61 is provided with a guide post 65 for positioning and guiding, the second mounting seat 71 is provided with a guide cylinder 77 corresponding to the guide post in position and matched with the guide post, and when the spring handle is pinched, the guide post can be inserted into the guide cylinder.

Referring to fig. 1-2, a connecting rod 51 connected with the pull rod 2 is arranged on the front side of the pull rod connecting seat 5, the upper spring plate and the lower spring plate both comprise a spring plate body 33 and a handle shell 34 arranged on the spring plate body 33, the spring plate body 33 is fixedly connected with the handle shell 34 through screws, and the handle shell 34 is provided with an anti-skid round hole; the upper elastic sheet and the lower elastic sheet are respectively connected with the connecting rod 51 through the handle connecting sheet 32 and drive the pull rod 2 to move back and forth through the connecting rod 51, the elastic sheet bodies of the upper elastic sheet and the lower elastic sheet are fixedly connected on one side far away from the handle shell 34, and the elastic sheet body 33 is arranged on the pull rod connecting seat 5 and can move back and forth relative to the pull rod connecting seat 5. The elastic piece body 33 is made of a metal material having a certain elasticity after heat treatment, and is unfolded at a certain angle in an original state, and is kneaded and released after being assembled with the handle housing, and then is restored to an original wanted-to-be-unfolded state.

Referring to fig. 1-2, a washing seat 41 is disposed on one side of the hollow outer tube 4 close to the spring handle 31, a water inlet 42 is disposed on the washing seat 41, and when washing is needed, water is introduced from the water inlet 42 and flows into the hollow outer tube 4, and finally flows out from the connecting end surface of the hollow outer tube 4 and the forceps head 1, so as to wash the forceps head 1.

Referring to fig. 1-2, an opening adjusting nut 8 capable of adjusting the opening angle of the binding clip 1 by adjusting the opening of the spring handle 31 is arranged on the outer wall of the tail of the pull rod connecting seat 5, an external thread is arranged on the tail of the pull rod connecting seat 5, and the opening adjusting nut 8 is screwed on the external thread on the tail of the pull rod connecting seat 5 and adjusts the opening of the spring handle 31 by adjusting the relative position of the spring handle 31 on the pull rod connecting seat 5. When kneading spring handle 31, shell fragment body 33 can take place deformation and for pull rod connecting seat 5 antedisplacement, thereby loosen spring handle 31 back shell fragment body 33 and reply original shape afterbody and can move backward a little, thereby open aperture adjusting nut 8 is through adjusting the open angle of the displacement volume adjustment spring handle 31 of loosening spring handle 31 afterbody to adjust the open angle of binding clip 1.

Referring to fig. 1-2, a clamping force adjusting nut 9 capable of adjusting the clamping force of the binding clip 1 is arranged at the outer end of the pull rod connecting seat 5, a clamping force adjusting nut fixing copper sheet 92 is arranged at the tail of the pull rod connecting seat 5, an adjusting screw 91 is arranged in the clamping force adjusting nut 9, the clamping force adjusting nut 9 is in positive thread fit with the pull rod 2, when the clamping force adjusting nut 9 is rotated clockwise, the length of the pull rod 2 is shortened, the displacement of the pull rod 2 is reduced, but the opening angle of the handle is always unchanged, so that the locking downward pressure of the lock catch is increased when the handle is kneaded, and the clamping force of the binding clip 1 is correspondingly increased through the lever principle; when the clamping force adjusting nut 9 is rotated to obtain the appropriate clamping force for the operation, the adjusting screw 91 is rotated clockwise by using a hexagon wrench matched with an instrument, so that the screw and the pull rod are completely pushed together, and the instrument clamping force can be fixed.

Referring to fig. 1-3, the binding clip 1 includes an upper binding clip 11 hinged to the pull rod 2 and capable of being opened or closed under the driving of the pull rod 2, and a lower binding clip 12 fixedly disposed on the hollow outer tube 4 and matched with the upper binding clip 11, and alloy tungsten steel sheets 13 are disposed on opposite sides of the upper binding clip 11 and the lower binding clip 12.

The specific embodiments described herein are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.