CN114081554A

CN114081554A - Pulling force wire passing device

Info

Publication number: CN114081554A
Application number: CN202111238908.2A
Authority: CN
Inventors: 林海永; 黄军
Original assignee: Yunyi Star Shanghai Technology Co ltd
Current assignee: Yunyi Star Shanghai Technology Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-02-25

Abstract

The invention discloses a tension wire passing device, which belongs to the technical field of medical instruments and comprises a wire rod, a guide handle and a handle, wherein the head end of the wire rod is connected with a return bend type puncture needle, the interiors of the return bend type puncture needle, the wire rod and the guide handle are all hollow and communicated to form a wire passing channel, a wire passing inner core is arranged in the wire passing channel in a penetrating way, a wire pushing groove is designed on the guide handle, the wire passing inner core is pushed to pass through the puncture needle, a spring groove is also formed in the handle, a compression spring is arranged in the spring groove, a tension scribing line is arranged in the middle of the guide handle, two vertical faces are axially and symmetrically arranged at the head end of the handle, a reading window is formed in the middle of each vertical face, and scale marks are arranged on the reading window. According to the invention, the relatively telescopic guide handle and the handle are arranged, so that the tension scribed line on the guide handle can move in the reading window on the handle, and the corresponding scale mark is read out, so that force value support is provided for a doctor, soft tissue can not be restored in place when the tension is small, and the soft tissue can be prevented from being damaged due to overlarge tension.

Description

Pulling force wire passing device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a tension wire passing device.

Background

In the case of an arthroscopic reconstructive posterior cruciate ligament operation, the ligament is generally pulled from the tibial tunnel to the femoral tunnel by a pull wire, so that the pull wire needs to pass through the entire tunnel before the ligament enters the bone tunnel.

It is common practice to drive a suture from the femoral tunnel and the tibial tunnel to the middle of the femoral and tibial joints, out of the body through a passage near the femoral and tibial joints, tie a knot in the body, and then pull one of the sutures to pass the other suture through the tunnel. For example, if the suture is pulled within the tibial tunnel, the suture is pulled within the femoral tunnel into the tibial tunnel.

However, in the above operation process, a doctor needs to apply a certain force to reposition the soft tissue, and at present, the doctor mainly relies on his own technique, when the traction force is small, the soft tissue cannot be repositioned, and when the traction force is too large, the soft tissue is injured, and the traditional thread passing device has a single function. In view of this, we propose a tension wire passing device.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide a tension wire passing device to solve the problems that the conventional wire passing device in the background art has single function and cannot provide support for a tension value.

2. Technical scheme

A tension threading device comprises a threading rod, a guide handle and a handle, wherein the tail end part of the guide handle is inserted into the head end of the handle and movably fixed with the handle through a limiting pin, the tail end part of the threading rod is inserted into the head end of the guide handle and movably fixed with the guide handle through a screw, the head end of the threading rod is connected with a return bending type puncture needle, the interiors of the return bending type puncture needle, the threading rod and the guide handle are all hollow and communicated to form a threading channel, a threading inner core is penetrated in the threading channel, the head end of the threading inner core penetrates out of the tip of the return bending type puncture needle to extend to the outside and is provided with a pre-treatment opening, the tail end of the threading inner core penetrates through the interior of the guide handle and penetrates out of the tail end of the handle, a spring groove is further formed in the handle, a compression spring sleeved outside the tail end of the guide handle is arranged in the spring groove, and the compression spring is limited in the spring groove through a compression spring baffle at the tail end of the guide handle, the middle part of the guide handle is provided with a tension scribed line, the head end of the handle is axially and symmetrically provided with two vertical surfaces, a reading window is arranged at the position of the middle part of each vertical surface, which is opposite to the tension scribed line, and the upper edge of the reading window is provided with a scale mark.

Preferably, the bottom surface of the tail end of the guide handle is provided with a limiting groove, the position of the bottom surface of the head end of the guide handle, which is opposite to the limiting groove, is provided with a positioning hole, the screw penetrates through the positioning hole to contact with the inner wall of the limiting groove, and the screw is in threaded connection with the positioning hole.

Preferably, a wire pushing groove is formed in the position, close to the head end, of the top surface of the guide handle, and the bottom surface of the wire pushing groove is communicated with the wire passing channel through two through holes.

Preferably, the guide handle middle part top surface is seted up the round pin groove, the round pin groove is rectangular shape structure, just the spacer pin head end extends to in the round pin groove and rather than sliding connection.

Preferably, the head end of the handle is of a conical structure, the tail end of the handle is of a cylindrical structure, and a plurality of grooves are formed in the cylindrical structure at equal intervals.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

according to the invention, the relatively telescopic guide handle and the handle are arranged, so that the tension scribed line on the guide handle can move in the reading window on the handle, and the corresponding scale mark is read out, so that force value support is provided for a doctor, soft tissue can not be restored in place when the tension is small, and the soft tissue can be prevented from being damaged due to overlarge tension. The invention has compact and reasonable structure and is convenient for popularization.

Drawings

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

FIG. 2 is a side view of the structure of the wire-passing rod of the present invention;

FIG. 3 is a schematic side view of the structure of the guide handle of the present invention;

FIG. 4 is a schematic top view of the structure of the guide handle of the present invention;

FIG. 5 is a side view of the handle of the present invention;

FIG. 6 is a schematic top view of the handle of the present invention;

FIG. 7 is a schematic structural view of a wire-passing inner core of the present invention;

the reference numbers in the figures illustrate: 1. a wire-passing rod; 2. a guide handle; 3. a handle; 4. a spacing pin; 5. a return bend type puncture needle; 6. a wire passing inner core; 7. a compression spring; 8. a pressure spring baffle plate; 9. a limiting groove; 10. positioning holes; 11. pushing the wire slot; 12. drawing lines by tension; 13. a pin slot; 14. pre-treating the opening; 15. a facade; 16. a reading window; 17. scale marks; 18. and (4) a groove.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1-7, the present invention provides a technical solution:

a pulling force thread passing device comprises a thread passing rod 1, a guide handle 2 and a handle 3, wherein the tail side end part of the guide handle 2 is inserted into the head end part of the handle 3 and is movably fixed with the handle 3 through a limiting pin 4, the tail side end part of the thread passing rod 1 is inserted into the head end part of the guide handle 2 and is movably fixed with the guide handle 2 through a screw, the head end of the thread passing rod 1 is connected with a return bend type puncture needle 5, the thread passing rod 1 and the guide handle 2 are all hollow and communicated to form a thread passing channel, a thread passing inner core 6 is arranged in the thread passing channel in a penetrating way, the thread passing inner core 6 is made of nickel-titanium alloy, the head is provided with a preprocessing opening 14 for facilitating threading, meanwhile, the nickel-titanium alloy has memory property and is convenient for passing in the narrow thread passing channel, the head end of the thread passing inner core 6 penetrates out of the tip part of the return bend type puncture needle 5 to extend to the outside and is provided with a preprocessing opening 14, the tail end of the thread passing inner core 6 penetrates through the inside of the guide handle 2 and penetrates out of the tail end of the handle 3, the handle 3 is also internally provided with a spring groove, a compression spring 7 sleeved outside the tail end of the guide handle 2 is arranged in the spring groove, the compression spring 7 is limited in the spring groove through a pressure spring baffle 8 at the tail end of the guide handle 2, the middle part of the guide handle 2 is provided with a tension marking line 12, the head end of the handle 3 is axially and symmetrically provided with two vertical faces 15, a reading window 16 is arranged at the position of the middle part of each vertical face 15 corresponding to the tension marking line 12, and a scale mark 17 is arranged on the upper edge of the reading window 16. According to the invention, the relatively telescopic guide handle 2 and the handle 3 are arranged, so that the tension scribed line 12 on the guide handle 2 can move in the window of the reading window 16 on the handle 3, the corresponding scale mark 17 is read out, the force value support is provided for a doctor, the situation that soft tissues cannot be restored in place when the tension is small is prevented, and the situation that the soft tissues are damaged due to overlarge tension is also prevented. The invention has compact and reasonable structure and is convenient for popularization.

Specifically, the bottom surface of the tail end of the guide handle 2 is provided with a limiting groove 9, the position of the bottom surface of the head end of the guide handle 2, which is opposite to the limiting groove 9, is provided with a positioning hole 10, a screw penetrates through the positioning hole 10 to be in contact with the inner wall of the limiting groove 9, and the screw is in threaded connection with the positioning hole 10.

Furthermore, a wire pushing groove 11 is formed in the position, close to the head end, of the top surface of the guide handle 2, and the bottom surface of the wire pushing groove 11 is communicated with the wire passing channel through two through holes. Through setting up two through-holes for cross line inner core 6 and pass and push away line groove 11, through this design, be convenient for receive and release the operation to crossing line inner core 6.

Furthermore, the top surface of the middle part of the guide handle 2 is provided with a pin groove 13, the pin groove 13 is in a long strip-shaped structure, and the head end of the limit pin 4 extends into the pin groove 13 and is connected with the pin groove in a sliding manner.

Furthermore, the head end of the handle 3 is a conical structure, the tail end of the handle 3 is a cylindrical structure, and a plurality of grooves 18 are formed in the cylindrical structure at equal intervals.

The method comprises the following steps:

1. when in use, the wire passing inner core 6 is completely retracted into the wire passing rod 1;

2. the puncture needle at the head of the wire guide rod 1 penetrates through soft tissue, the handle 3 is held to pull the soft tissue, the guide handle 2 and the handle 3 compress the compression spring 7, the guide handle 2 and the handle 3 move relatively, the tension reticle 12 can move in the window of the reading window 16, the corresponding scale mark 17 is read out, force value support is provided for a doctor, the soft tissue cannot be restored in place when the pulling force is small, and the soft tissue is prevented from being damaged due to overlarge pulling force.

3. After reset, the suture rod extends out of the pretreatment opening at the head of the inner core, passes through the suture and exits from the threading needle of the thread passing rod to complete the thread passing of soft tissues.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A pulling force wire passing device is characterized in that: comprises a wire rod (1), a guide handle (2) and a handle (3), wherein the tail side end part of the guide handle (2) is inserted into the head end part of the handle (3) and movably fixed with the handle (3) through a limiting pin (4), the tail side end part of the wire rod (1) is inserted into the head end part of the guide handle (2) and movably fixed with the guide handle (2) through a screw, the head end of the wire rod (1) is connected with a bending puncture needle (5), the wire rod (1) and the guide handle (2) are all hollow and communicated to form a wire passage, a wire passing inner core (6) is arranged in the wire passage in a penetrating way, the head end of the wire passing inner core (6) penetrates out of the bending puncture needle (5) and extends to the outside and is provided with a pre-treatment opening (14), and the tail end of the wire passing inner core (6) penetrates through the inside of the guide handle (2) and penetrates out of the tail end of the handle (3), still seted up the spring groove in handle (3), the compression spring (7) in the guide handle (2) tail end outside is located to the spring inslot, compression spring (7) are spacing in the spring inslot through pressure spring baffle (8) of guide handle (2) tail end, guide handle (2) middle part is equipped with pulling force groove (12), handle (3) head end axial symmetry is equipped with two facade (15), reading window (16) have been seted up to the position of relative pulling force groove (12) in facade (15) middle part, it is equipped with scale mark (17) to go up reason on reading window (16).

2. The tension wire guide of claim 1, wherein: the bottom surface of the tail end of the guide handle (2) is provided with a limiting groove (9), the position of the bottom surface of the head end of the guide handle (2) relative to the limiting groove (9) is provided with a positioning hole (10), the screw penetrates through the positioning hole (10) to be in contact with the inner wall of the limiting groove (9), and the screw is in threaded connection with the positioning hole (10).

3. The tension wire guide of claim 1, wherein: the wire pushing groove (11) is formed in the position, close to the head end, of the top surface of the guide handle (2), and the bottom surface of the wire pushing groove (11) is communicated with the wire passing channel through two through holes.

4. The tension wire guide of claim 1, wherein: guide handle (2) middle part top surface has seted up cotter way (13), cotter way (13) are rectangular shape structure, just spacer pin (4) head end extends to in cotter way (13) and rather than sliding connection.

5. The tension wire guide of claim 1, wherein: the handle (3) head end is the toper structure, handle (3) tail end is the columnar structure to a plurality of recesses (18) are seted up to the equidistant of columnar structure.