Bone marrow passage line passing device

Abstract

A line passing device for a bone marrow tract belongs to the field of medical instruments. The invention aims to solve the problem of suture penetration through a bone tunnel in an orthopedic surgery. The device comprises a handle, a shifting wheel device, a main rod, a bent pipe and a metal wire. The elbow is connected to the far end of the main rod, and the handle is connected to the near end of the main rod. And the hollow structures have the same inner diameter and are mutually communicated and butted. The main rod is columnar. One section of the bent pipe is a straight pipe, and the other section is an arc-shaped pipe. The arc-shaped pipe is provided with an observation window. The metal wire runs through the hollow structures in the bent pipe, the main rod and the handle, and the far end of the metal wire is a metal ring. The shifting wheel device is located on the side face of the far end of the handle, and the metal wire can move in the hollow structure through rotation of a pulley of the shifting wheel device. The device is low in cost, rapid in threading, simple in structure, high in operability and capable of effectively solving the problem of threading through the bone marrow tract in the orthopedic surgery.

Description

Technical Field

[0001] The present invention relates to medical machinery, and particularly to an auxiliary tool in orthopedic surgery. Specifically, a bone marrow canal wire passer is provided. Background Art

[0002] In orthopedic surgery, tools such as Kirschner wires are often used to drill holes in bones and pass sutures through corresponding bone tunnels, thereby achieving fracture reduction and fixation. In the existing operation methods, it is mostly selected to straighten a medical suture needle and then pass the suture through the bone tunnel, but there are difficulties such as difficult wire passing, time-consuming and laborious, and low efficiency. Therefore, it is very necessary to design a bone marrow canal wire passer. Summary of the Invention

[0003] The purpose of the present invention is to provide a bone marrow canal wire passer to solve one or more of the above-mentioned problems in the prior art.

[0004] The present invention includes a handle, a dial wheel device, a main rod, a bent pipe, and a wire.

[0005] The components of the bone marrow canal wire passer are described as follows:

[0006] The bent pipe is connected to the distal end of the main rod, and the handle is connected to the proximal end of the main rod. The bent pipe, the main rod, and the handle are all provided with hollow structures having the same inner diameter, and the hollow structures are mutually connected and communicated.

[0007] The handle is cylindrical, and its surface is provided with several grooves to facilitate the operator's grip.

[0008] The main rod is columnar and is provided with a hollow structure inside. The distal end of the main rod is connected to the body of the bent pipe to support and fix the bent pipe. The side surface of the distal end body of the main rod is connected to the arc end of the bent pipe, and the hollow structure inside the main rod communicates with the hollow structure of the bent pipe head here. The through channel is curved to facilitate the movement of the wire in the hollow structure.

[0009] One section of the bent pipe is a straight pipe, and the other section is an arc pipe. The distal end of the straight pipe is a straight pipe opening, and the arc pipe end is connected to the side surface of the main rod body. The arc pipe is provided with an opening groove as an observation window for the movement of the wire.

[0010] The dial wheel device is located on the side surface of the distal end of the handle. A groove is dug on the side surface of the distal end of the handle. Rotating shaft grooves are provided on both sides of the center of the groove. The pulley is installed in the groove and rotates by the rotating shaft. Dozens of small tooth grooves are provided on the edge of the pulley, and the edge of the pulley is tangent to the hollow structure of the handle.

[0011] The metal wire runs through the hollow structure in the curved pipe, the main rod and the handle, the metal wire is made of nickel-titanium alloy, and the distal end of the metal wire is a metal ring. The metal wire can be moved in the hollow structure by rotating the pulley of the toggle wheel device, and as the metal wire moves, the metal ring at the distal end of the metal wire can be drawn into the hollow pipe.

[0012] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention has a positive and obvious effect, and can effectively solve the problem of threading through the medullary canal in orthopedic surgery. The device has low cost, fast threading, simple structure, strong operability, large clinical demand, easy popularization and promotion, and has great economic benefits and market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 Northeast isometric view of the medullary canal wire passer of the present invention;

[0015] Figure 2 Southwest isometric view of the medullary canal wire passer of the present invention;

[0016] Figure 3 A front view of the medullary canal wire passer of the present invention;

[0017] Figure 4 A left side view of the medullary canal wire passer of the present invention;

[0018] Figure 5 A top view of the medullary canal wire passer of the present invention;

[0019] Figure 6 A front view of the proximal end of the main rod and the curved tube of the medullary canal wire passing device of the present invention;

[0020] Figure 7 Southwest isometric view of the toggle wheel device of the medullary canal wire passing device of the present invention;

[0021] Figure 8 A left side view of the toggle wheel device of the medullary canal wire passing device of the present invention;

[0022] Figure 9 A front view of the toggle wheel device of the medullary canal wire passing device of the present invention;

[0023] Description of reference numerals:

[0024] 1. Handle; 2. Driving wheel device; 21. Groove; 22. Pulley; 23. Rotating shaft; 3. Main rod; 4. Bend pipe; 41. Straight pipe; 42. Arc pipe; 43. Bend pipe body; 44. Straight pipe opening; 45. Arc pipe end; 46. Observation window; 5. Metal wire; 51. Metal ring. Detailed implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0026] As Figure 1 — Figure 9 shown. The bone marrow threading device includes a handle [1], a toggle wheel device [2], a main rod [3], a bent pipe [4], and a wire [5]. The bent pipe [4] is connected to the distal end of the main rod [3], and the handle [1] is connected to the proximal end of the main rod [3]. The bent pipe [4], the main rod [3], and the handle [2] are all provided with hollow structures having the same inner diameter, and the hollow structures are interconnected and docked. The handle [1] is cylindrical, and its surface is provided with several grooves to facilitate the operator's grip. The main rod [3] is columnar and is provided with a hollow structure inside. The distal end of the main rod [3] is connected to the body part

[43] of the bent pipe to support and fix the bent pipe. The side surface of the distal body part of the main rod [3] is connected to the arc-shaped pipe

[42] of the bent pipe [4]. The hollow structure inside the main rod [3] communicates with the hollow structure of the arc-shaped pipe

[43] of the bent pipe [4] here, and the through-channel is curved to facilitate the movement of the wire [5] in the hollow structure. One section of the bent pipe [4] is a straight pipe

[41] , and the other section is an arc-shaped pipe

[42] . The distal end of the straight pipe

[41] is a straight pipe opening

[44] , and the arc-shaped pipe

[42] end is connected to the side surface of the body part of the main rod [3]. The arc-shaped pipe

[42] is provided with an opening groove as the observation window

[46] for the movement of the wire [5]. The toggle wheel device [2] is located on the distal side surface of the handle [1]. A groove

[21] is dug on the distal side surface of the handle [1]. Rotation shaft grooves are provided on both sides of the center of the groove

[21] . The pulley

[22] is installed in the groove

[21] and rotates by means of the rotation shaft

[23] . Dozens of small tooth grooves

[24] are provided on the edge of the pulley

[22] , and the edge of the pulley

[22] is tangent to the hollow structure of the handle [1]. The wire [5] runs through the hollow structures inside the bent pipe [4], the main rod [3], and the handle [1]. The wire [5] is made of nitinol alloy, and the distal end of the wire [5] is a metal ring

[51] . The wire [5] can be moved in the hollow structure by the rotation of the pulley

[22] of the toggle wheel device [2]. As the wire [5] moves, the metal ring

[51] at the distal end of the wire can be drawn into the hollow pipe.

[0027] The working principle of the present invention is as follows: During orthopedic surgery, when it is necessary to thread a suture into a bone tunnel, the surgeon holds the bone marrow tunnel wire passer and toggles the pulley

[22] , so that the metal ring

[51] at the distal end of the metal wire [5] is drawn into the hollow pipe. The straight pipe

[41] of the bone tunnel wire passer is inserted into the bone tunnel and exits from the other side of the bone tunnel. Then, the pulley is toggled again, so that the metal ring

[51] at the distal end of the metal wire [5] exits from the hollow pipe. A suture is put into the metal ring

[51] . The bone marrow tunnel wire passer and the suture are withdrawn from the bone tunnel together. The bone marrow tunnel wire passer is removed, and the next operation is carried out.

[0028] Details not described in the present invention are all well-known technologies to those skilled in the art.

[0029] The above is only a preferred embodiment of the present invention. Through the above description, relevant workers can make various changes and modifications completely within the scope without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the protection scope of the present invention is not defined thereby. Any replacement and improvement made on the basis of not violating the concept of the present invention fall within the protection scope of the present invention.

Claims

1. A medullary canal wire passer, characterized in that: The medullary canal wire passer consists of a handle, a toggle wheel device, a main rod, a curved tube, and a metal wire. When sutures need to be inserted into the bone tunnel, the operator holds the medullary canal wire passer, inserts it into the bone tunnel, and toggles the toggle wheel device to make the metal wire pass out of the main rod, inserts the suture into the distal end of the metal wire, and pulls the medullary canal wire passer out of the bone tunnel together with the suture, so that the suture can be inserted into the medullary canal.

2. The medullary canal wire passer according to claim 1, characterized in that: The bent pipe is connected to the distal end of the main rod, and the handle is connected to the proximal end of the main rod. Hollow structures are arranged inside the bent pipe, the main rod and the handle. The hollow structures have the same inner diameter and are interconnected and connected.

3. The medullary canal wire passer according to claim 1, characterized in that: The handle is cylindrical and has several grooves on the surface to facilitate the operator's holding.

4. The medullary canal wire passer according to claim 1, characterized in that: The main rod is columnar with a hollow structure inside. The farthest end of the main rod is connected to the body of the elbow, and the side of the far end of the main rod is connected to the arc end of the elbow. The hollow structure inside the main rod is interconnected with the hollow structure of the elbow head here.

5. The medullary canal wire passer according to claim 1, characterized in that: One section of the curved pipe is a straight pipe, and the other section is an arc-shaped pipe. The arc-shaped pipe is provided with an open slot serving as an observation window for the movement of the metal wire.

6. The medullary canal wire passer according to claim 1, characterized in that: The toggle wheel device is located on the far side of the handle. A groove is dug on the far side of the handle. Rotation axis grooves are provided on both sides of the center of the groove. The pulley is installed in the groove and rotated by the rotation axis. Dozens of small tooth grooves are provided on the edge of the pulley, and the edge of the pulley is tangent to the hollow structure of the handle.

7. The medullary canal wire passer according to claim 1, characterized in that: The metal wire runs through the hollow structure inside the curved pipe, the main rod and the handle. The metal wire is made of nickel-titanium alloy. The far end of the metal wire is a metal ring. The metal wire can move in the hollow structure by turning the pulley.

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