CN111493978A - Tendon guide forceps - Google Patents

Abstract

The invention provides tendon guide forceps, which comprise a clamp for clamping a broken tendon, wherein the tail end of the clamp is connected with one end of a traction tube, the other end of the traction tube is provided with a handle for controlling the clamp to open and close, and when the clamp is closed, the front end of a fixed clamp body forming the clamp is positioned in front of the front end of a movable clamp body. The two forceps bodies staggered front and back enable the front ends of the fixed forceps bodies to be inserted into gaps between the tendons and tendon sheaths when the forceps reach the tendon, at the moment, an operator can obtain a clear hand feeling to judge that the fixed forceps bodies are in place, then the forceps are opened through the handles to continue to move forwards to enable the tendons to be located between the fixed forceps bodies and the movable forceps bodies, and at the moment, the closed forceps bite the tendons to lead out the tendons from the tendon sheaths. Therefore, the tendon can be guided quickly and accurately, medical staff can determine the state of the clamp by hand feeling in the operation process without repeated attempts, the times of seeking and clamping are reduced, and the operation time and the injury to a patient are reduced.

Description

tendon guide forceps

technical field

The invention relates to the field of medical instruments, in particular to a tendon guiding forceps.

Background technique

In surgery, tendon injuries are common, as tendons often retract when ruptured. In particular, the rupture of the flexor tendon in zone II will retract into the palm or even the carpal tunnel. In order to ensure the needs of minimally invasive surgery to facilitate postoperative recovery, it is necessary to blindly operate the tendon with the tendon guide forceps along the tendon sheath.

The existing related design in the prior art, namely Chinese patent document CN2549912Y , discloses a tendon guiding forceps, which includes a traction part and a occlusal part that can be opened and closed, and the occlusal part is composed of two forceps heads with the same structure. The occlusal part cannot quickly and accurately engage the occlusal tendon, so it is difficult for medical staff to judge whether the occlusal part reaches and engages the occlusal tendon under blind exercise, and the phenomenon of blind clip failure is easy to occur. Causes secondary damage to the tendon and tendon sheath, and also prolongs the operation time.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a tendon guide forceps which can quickly and accurately clamp the tendon rupture and lead it out.

In order to achieve the above object, the present invention adopts the following technical solutions: a tendon guiding forceps, comprising a forceps for clamping ruptured tendons, the tail end of the forceps is connected with one end of the traction tube, and the other end of the traction tube is provided with a control device. The handle for opening and closing the clamp, when the clamp is closed, the front end of the fixed clamp body constituting the clamp is located in front of the front end of the movable clamp body.

In the above scheme, the front and rear dislocation of the two forceps causes the forceps to move forward a certain distance when they reach the tendon, so that the front end of the fixed forceps can be inserted into the gap between the tendon and the tendon sheath. At this time, the operator will get a clear feel. It is judged that the fixed forceps body is in place, and then open the forceps through the handle and continue to move forward so that the tendon is located between the fixed forceps body and the movable forceps body. At this time, the closed forceps bite the tendon and pull out the tendon from the tendon sheath. In this way, the tendon can be guided quickly and accurately. During the operation, the medical staff can also determine the state of the clamp by feel, without repeated attempts, reducing the number of times of seeking and clamping, reducing the operation time and the harm to the patient.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is the dismantling structure schematic diagram of the present invention;

Figures 3 and 4 are respectively the open and closed state sectional views of the present invention;

Figures 5 and 6 are respectively a three-dimensional schematic diagram of the open and closed state of the front section of the guiding forceps;

FIG. 7 is a schematic three-dimensional structure diagram of the front section tube body and the fixed clamp body;

FIG. 8 is a schematic three-dimensional structure diagram of a movable clamp body.

Detailed ways

A tendon guiding forceps, comprising a forceps 10 for clamping ruptured tendons, the end of the forceps 10 is connected with one end of a traction tube 20, and the other end of the traction tube 20 is provided with a handle 30 for controlling the opening and closing of the forceps 10, When the clamp 10 is closed, the front end of the fixed clamp body 11 constituting the clamp 10 is located in front of the front end of the movable clamp body 12 .

In the above scheme, during the operation, the clamp 10 is first closed by the handle 30, the clamp 10 is inserted into the tendon sheath from the surgical wound, and the clamp 10 is stretched forward along the tendon sheath. It has been inserted into the gap between the tendon and the tendon sheath. At this time, open the clamp 10 through the handle 30 and continue to extend forward so that the tendon is located between the fixed clamp body 11 and the movable clamp body 12, and the closed clamp 10 bites the tendon and pulls the tendon. Pull out to the location where suturing is needed for surgical suturing. In this way, the tendon can be guided quickly and accurately, and the medical staff can also determine the state of the clamp 10 by feel during the operation, which is conducive to extracting the tendon when the tendon cannot be seen. time and harm to patients.

The half-body fixed clamp body 11 is fixedly arranged at the front end of the traction tube 20, and the length direction of the fixed clamp body 11 and the length direction of the traction tube 20 are arranged along the length of the tube. The axis direction of the 50 is perpendicular to the length direction of the movable caliper body 12, and the clamping surfaces of the fixed caliper body 11 and the movable caliper body 12 are parallel to the hinge shaft 50. A reset elastic piece 13 is provided between the movable caliper body 12 and the traction tube 20. The reset elastic piece 13 provides elastic force to drive the clamping openings of the fixed forceps body 11 and the movable forceps body 12 to open. The setting of the reset elastic piece 13 makes it possible to release the handle 30 when the clamp 10 needs to be opened, and the handle 30 only needs to provide a closing force, so the structure is simple and easy to operate.

The reset elastic piece 13 is in the shape of a folded piece, one section of the folded piece is connected to the rear section of the movable forceps body 12 , and the other section is suspended and abuts against the inner wall of the pulling tube 20 . The reset shrapnel 13 has a simple structure and is convenient to be installed and disassembled on the guide pliers with a compact structure.

The traction tube 20 is composed of a front section tube body 22 and a rear section tube body that are disassembled and matched. The upper tube wall of the front end of the front section tube body 22 has a missing part to form an opening, and the opening is provided with an arc-shaped plate-shaped tube cover 21. , the tube cover 21 is consistent with the curvature of the outer wall of the pulling tube 20 . Since the front end of the guiding forceps is relatively complicated and has a lot of blood stains, it is convenient to disassemble and carefully clean the structure of the front section of the guiding forceps, and the rear end of the guiding forceps can be routinely disinfected and cleaned.

The suspended free end of the reset elastic piece 13 abuts against the inner cover surface of the tube cover 21 . In this way, the tube cover 21 and the movable pliers body 12 compress the reset elastic piece 13. Since the tube cover 21 is fixedly arranged, the elastic force of the reset elastic piece 13 will drive the clamping openings of the fixed pliers body 11 and the movable pliers body 12 to open.

The rear end face of the tube cover 21 abuts against the rear end face 222 of the notch on the front section tube body 22 , the front end of the tube cover 21 is clamped on the support 221 provided on the front section tube body 22 , and the hinge shaft 50 is a pin shaft and They are sequentially inserted into the connecting hole 213 at the front end of the tube cover 21 , the hole 221 a on the support 221 and the pin hole 122 in the middle and rear section of the movable forceps body 12 . In the above scheme, at least one connecting hole 213 on the pipe wall of the pipe cover 21 is a threaded hole, the pin hole 122 can only be a through hole, and the hole 221a can be either a threaded hole or a through hole, so that the front end of the pipe cover 21 can be fixed on the The pulling tube 20 is easy to disassemble and clean at the same time.

The front end of the pipe cover 21 is an arc end face 212 , the center of curvature of the arc end face 212 is coincident with the axis of the hinge shaft 50 , the rear section of the movable clamp body 12 is embedded in the support 221 , and the middle and rear of the movable clamp body 12 There is a curved step 123 at the part to be attached and matched with the arc end surface 212 . This ensures that the contact part of the guide forceps and the tendon sheath is as smooth as possible to avoid secondary damage to the tendon sheath or other tissues during the opening and closing process of the forceps 10 .

The rear end surface 211 of the tube cover 21 forms a snap fit with the built-in step provided on the rear end surface 222 of the notch on the front tube body 22 . In this way, the rear end of the pipe cover 21 can be fixed to the pulling pipe 20, and the disassembly and assembly are more convenient.

The rear end of the movable pliers body 12 is provided with a hook 121, which is hooked to the hanging ring 41 provided at the front end of the pull rope 40. The pull rope 40 provides tension and overcomes the elastic force of the reset elastic piece 13 to drive the fixed pliers body 11 and the movable pliers body. The clamping opening of 12 is closed, and the handle is V-shaped. The side close to the clamp 10 is the fixed handle 31, and the side away from the clamp 10 is the movable handle 32. The movable handle 32 is parallel to the hinge through the axis direction. The rotating shaft 33 of the shaft 50 is hinged on the fixed handle 31, and the pull rope 40 drawn from the traction tube 20 bypasses the rotating shaft 33 and is connected to the movable handle 32. The fixed handle 31 and the movable handle 32 are provided with two driving devices. The return spring 34 whose opening degree changes from small to large. The hooking structure is easy to disassemble and assemble, and when the movable handle 32 is closed to the fixed handle 31, the arc length of the fitting section of the pull rope 40 on the rotating shaft 33 becomes longer, so that the front end of the pull rope 40 will move backwards to pull the movable pliers The body 12 thus enables the handle to control the closure of the clamp 10 .

The traction tube 20 is a bendable serpentine tube, the occlusal surfaces of the fixed forceps body 11 and the movable forceps body 12 are provided with anti-skid protrusions 14, and the surfaces of the fixed forceps body 11 and the movable forceps body 12 in contact with the inner wall of the tendon sheath are A circular arc surface that conforms to the contour of the inner wall of the tendon sheath. In this way, the traction tube 20 can adapt to the tendon sheath structure of the curved part and can further prevent the damage of the tendon sheath caused by the rigid structure. The anti-slip protrusion 14 ensures that the clamp 10 can stably engage the tendon to prevent it from falling off, and the arc surface ensures that the guide forceps is in contact with the tendon sheath. The part should be closed and smooth as much as possible to avoid the sharp structure from scratching the tendon sheath during the traction process.

Claims (10)

1. A tendon guiding pliers, comprising a pliers (10) for clamping ruptured tendons, the tail end of the pliers (10) is connected with one end of a traction tube (20), and the other end of the traction tube (20) is provided with The handle (30) for controlling the opening and closing of the clamp (10) is characterized in that: when the clamp (10) is closed, the front end of the fixed clamp body (11) constituting the clamp (10) is located at the front end of the movable clamp body (12). front. 2. The tendon guiding forceps according to claim 1, wherein the fixed forceps body (11) is fixedly arranged at the front end of the traction tube (20) and the length direction of the fixed forceps body (11) and the traction tube (20) are fixed. ) along the length direction of the tube, the rear of the movable caliper body (12) is hinged to the front end of the traction tube (20), the axis of the hinge shaft (50) is perpendicular to the length direction of the movable caliper body (12) and the clamp body is fixed (11) The clamping surface of the movable caliper body (12) is parallel to the hinge shaft (50), and a reset elastic sheet (13) is provided between the movable caliper body (12) and the traction tube (20), and the reset elastic sheet (13) provides The elastic force drives the clamping openings of the fixed forceps body (11) and the movable forceps body (12) to open. 3. The tendon guiding forceps according to claim 2 is characterized in that: the reset shrapnel (13) is in the shape of a folded piece, and a section of the folded piece is connected with the rear section of the movable forceps body (12), and the other section is in a suspended shape and against the inner wall of the pulling tube (20). 4. The tendon guiding forceps according to claim 1, characterized in that: the traction tube (20) is composed of a front section tube body (22) and a rear section tube body that are disassembled and matched, and the front section tube body (22) has a The upper pipe wall of the front end has a missing part to form an opening, an arc-shaped plate-shaped pipe cover (21) is arranged at the opening, and the pipe cover (21) matches the curvature of the outer wall of the traction pipe (20). 5. The tendon guiding forceps according to claim 3 or 4, characterized in that: the suspended free end of the reset elastic piece (13) abuts on the inner cover surface of the tube cover (21). 6. The tendon guiding forceps according to claim 3, characterized in that: the rear end surface of the tube cover (21) abuts against the rear end surface (222) of the notch on the front section tube body (22), and the tube cover (21) The front end is clamped on the support (221) provided on the front pipe body (22), the hinge shaft (50) is a pin shaft and is sequentially inserted in the connecting hole (213) at the front end of the pipe cover (21), the support (221) on the hole (221a) and the pin hole (122) in the middle and rear section of the movable caliper body (12). 7. The tendon guiding forceps according to claim 6, characterized in that: the front end of the tube cover (21) is a circular arc end surface (212), and the center of curvature of the circular arc end surface (212) is the same as the hinge shaft (50). The shaft cores are coincident, the rear section of the movable caliper body (12) is embedded in the support (221), and the middle and rear part of the movable caliper body (12) is provided with a curved surface step (123) and the circular arc end surface (212) for attachment and cooperation . 8. The tendon guiding forceps according to claim 6, characterized in that: a built-in set on the rear end surface (211) of the tube cover (21) and the rear end surface (222) of the gap on the front tube body (22) The steps constitute a snap fit. 9 . The tendon guiding forceps according to claim 2 , wherein a hook ( 121 ) is provided at the rear end of the movable forceps body ( 12 ), and a hook ( 121 ) is provided with a hanging ring at the front end of the pull rope ( 40 ). 10 . (41) Hooking, the pull rope (40) provides tension and overcomes the elastic force of the reset elastic piece (13) to drive the clamping openings of the fixed forceps body (11) and the movable forceps body (12) to be closed, and the handle is V The side close to the clamp (10) is a fixed handle (31), and the side away from the clamp (10) is a movable handle (32), and the movable handle (32) is parallel to the hinge shaft (50) through the axis direction. The rotating shaft (33) of the rotary shaft (33) is hinged on the fixed handle (31), and the pull rope (40) drawn from the traction tube (20) bypasses the rotating shaft (33) and is connected to the movable handle (32). The fixed handle (31) ) and the movable handle (32) are provided with a return spring (34) which drives the opening degrees of the two to change from small to large. 10. The tendon guiding forceps according to claim 1, characterized in that: the traction tube (20) is a bendable serpentine tube, and the occlusal surfaces of the fixed forceps body (11) and the movable forceps body (12) are Anti-slip protrusions (14) are provided, and the surfaces of the fixed forceps body (11) and the movable forceps body (12) in contact with the inner wall of the tendon sheath are arc surfaces conforming to the contour of the inner wall of the tendon sheath.

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