CN219207259U

CN219207259U - Orthopedics steel wire tractor

Info

Publication number: CN219207259U
Application number: CN202223578127.0U
Authority: CN
Inventors: 魏志辉; 江莲
Original assignee: Yongchuan Hospital of Chongqing Medical University
Current assignee: Yongchuan Hospital of Chongqing Medical University
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-20
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses an orthopaedics steel wire tractor, which relates to the technical field of medical appliances, in particular to an orthopaedics steel wire tractor. During operation, the steel wire is fixed in the limiting component on the guide post, and the guide post is brought to the rear side of the broken bone through the first needle body. Then the second needle body is inserted into the rear side of the broken bone from the other side of the broken bone, the guide post is aligned to the circular groove formed at the end part of the second needle body, and the guide post is clamped into the circular groove. The limiting pin in the circular groove is clamped into the clamping groove on the guide post, so that the guide post is fixed. The guide post together with the wire is pulled out of the surgical incision through the second needle. The steel wire winds the normal bone and the broken bone for one circle, and at the moment, the two ends of the steel wire are gradually screwed at the operation incision, so that the broken bone can be extruded and reset. The technical scheme is mainly used for bone fracture bone reduction operation and solves the problem that a guide rope is easy to break in minimally invasive wire-tying reduction operation.

Description

Orthopedics steel wire tractor

Technical Field

The utility model relates to the technical field of medical appliances, in particular to an orthopedic steel wire retractor.

Background

For long oblique and spiral fracture of long diaphysis, the long oblique and spiral fracture is usually bound and fixed by adopting steel wires after open reduction, but incision reduction wounds are large, and periosteum can be damaged to cause delayed healing and even non-healing of the fracture. In order to relieve the pain of patients, a minimally invasive wire-tying and resetting method is often adopted. As shown in FIG. 3, a minimally invasive wirebond reduction procedure typically makes a small incision of about 1.5cm on the anterior and posterior sides of the patient's thigh bone, with a first pair of medium-sized curved jaws holding the guide wire. The first middle-sized curved forceps hold the guide wire to insert from the front incision, stick to periosteum along the back of diaphysis and extend to the back side of the broken end. The second middle bending forceps extend into the bone along the bone surface until meeting the first middle bending forceps, and the second middle bending forceps clamp the guide wire and pull out from the rear side incision. And the second middle-sized bending forceps clamp the guide wire firmly again and then enter the rear side incision, and the guide wire is taken out of the front side incision. The middle-size steel wire is folded in half and sleeved into a guide wire, the guide wire is pulled, and the guide wire is wound around the diaphysis and broken bones for one circle. After the steel wire is pulled out from the front side incision, the two ends of the steel wire are close to each other and are twisted together, and the broken bone is gradually reset under the drive of the steel wire. The surgical incision range of a patient is effectively reduced, two incisions are still needed to be made at the broken bones of the patient, and the guide rope is easily broken when the bending forceps drag and pull the guide rope, so that great trouble is brought to the patient and doctors.

Disclosure of Invention

The utility model aims to provide an orthopedic wire retractor which solves the problem that a guide rope is easy to break in a minimally invasive wire bundling and resetting operation.

The technical aim of the utility model is realized by the following technical scheme: the utility model provides an orthopedics steel wire tractor, includes first needle body, second needle body, first needle body, second needle body one end are circular-arc, first needle body is the pipe, joint has the guide post in the circular-arc end of first needle body, guide post one end is located outside the first needle body, the guide post is conical in the outer one end of first needle body, the internal fixedly connected with spacing ring of first needle, the guide post is located the internal one end of first needle and is equipped with spacing subassembly, spacing subassembly is used for fixed steel wire, circular recess that supplies guide post male is seted up to the circular-arc end of second needle body, first circular through-hole has been seted up to the lateral wall of circular recess, wear to be equipped with the spacer pin in the circular through-hole of first, the middle part of spacer pin and the inboard common fixedly connected with spring of first circular through-hole, set up the draw-in groove that supplies the spacer pin male on the guide post.

The principle and effect of the technical scheme are as follows: in the initial state, the steel wire stretches out from the circular arc end after being inserted from the linear end of the first needle body, the guide column is clamped in the circular arc end of the first needle body, and the steel wire is fixed in the limiting component. When the fractured bones of the leg of the patient are required to be reset, an incision is made on one side of the leg of the patient. The first needle body is held to drive the guide post to be inserted from the incision, and the guide post is tightly clung to periosteum from the left side around the bone to the rear side of the broken bone. In the process of inserting the first needle body, the limiting ring prevents the guide post from integrally entering the first needle body. The second needle body is held, the second needle body is moved from the right side to the rear side of the broken bone from the bone, which is clung to the periosteum, and the position of the second needle body is adjusted until the guide post is inserted into the circular groove. The guide post is inserted into the circular groove, and meanwhile, the limiting pin is inserted into the clamping groove, so that the limiting pin is locked. And slowly extracting the second needle body along the original path, so that the steel wire fixed by the guide post and the limiting component can be slowly extracted. Finally, the steel wire is drawn out from the incision, the other end of the steel wire is still positioned outside the incision, and then the first needle body is slowly drawn out. After the first needle body is completely drawn out, the two ends of the steel wire are positioned at the same incision, the steel wire winds the normal bone and the broken bone for one circle, and at the moment, the two ends of the steel wire are mutually twisted together at the incision and are gradually screwed, so that the broken bone can be extruded and reset. The problem that the guide rope is easy to break is effectively avoided, and the patient is greatly reduced by only making an operation incision on the leg of the patient.

The utility model further provides that the limiting assembly comprises a first arc-shaped rod, the first arc-shaped rod is rotatably connected with one end of the guide post, which is positioned in the first needle body, a torsion spring is arranged between the first arc-shaped rod and the guide post, one end of the guide post is fixedly connected with a second arc-shaped rod, and the free end of the first arc-shaped rod abuts against the inner side of the second arc-shaped rod.

By adopting the technical scheme, before an operation, the steel wire is folded in half, and the folded part of the steel wire is opened and sleeved on the inner side of the first arc-shaped rod. When the steel wire is sleeved into the inner side of the first arc-shaped rod, the free end of the first arc-shaped rod is firstly propped up from outside to inside, the first arc-shaped rod rotates to the guide column around the rotating point on the guide column, the first arc-shaped rod is separated from contact with the second arc-shaped rod, the torsion spring generates torsion, and the steel wire enters the inner side of the first arc-shaped rod from a gap between the first arc-shaped rod and the second arc-shaped rod. Then the acting force on the first arc-shaped rod is withdrawn, the first arc-shaped rod is reset under the action of the torsion spring, and the first arc-shaped rod abuts against the inner side of the second arc-shaped rod. Thereby achieving the effect of fixing the steel wire and the guide post together.

The utility model is further arranged that one end of the limiting pin, which is far away from the circular groove, is fixedly connected with a wedge-shaped block positioned outside the circular groove.

By adopting the technical scheme, after the second needle body brings the guide post out of the notch, the guide post is required to be taken out of the circular groove. The limit pin can be lifted outwards by slightly inserting the gap between the wedge-shaped block and the second needle body with fingers, so that the limit pin is separated from the clamping groove. The guide post can be easily taken out from the circular groove after the limiting pin is separated from the clamping groove, so that the effect of conveniently taking out the guide post is achieved.

The utility model further provides that the clamping groove is an annular groove surrounding the periphery of the guide post.

Through adopting above-mentioned technical scheme, the in-process that the guide post inserted circular recess, because the draw-in groove is annular, as long as the guide post inserts circular recess back, the spacer pin can insert in the draw-in groove, need not to deliberately go to the position of alignment draw-in groove and spacer pin, reaches the effect of convenient spacer pin insertion draw-in groove.

The utility model is further characterized in that the straight section end of the first needle body is sleeved with a circular ring, the circular ring is in threaded connection with the first needle body, and a plurality of second circular through holes parallel to the axis are formed in the circular ring.

Through adopting above-mentioned technical scheme, before the operation, fix the back in spacing subassembly with the steel wire, the other end of steel wire is located outside the straight end of first needle body, in the round through-hole of second on the ring with the steel wire round trip in proper order of this one end. The circular ring is rotated, and the circular ring and the thread of the first needle body move towards the circular arc end in a matched mode, so that the steel wire is tensioned. After the steel wire is tensioned, the guide post positioned in the arc end is tensioned, so that the first needle body is prevented from being separated from the first needle body in the process that the guide post is carried by the first needle body and moves to the rear side of the broken bone.

In summary, the utility model has the following beneficial effects: the problem that the guide rope is easy to break is effectively avoided, and only one operation incision is needed to be made on the leg of a patient, so that the operation wound is smaller, and the injury to the patient is greatly reduced.

Drawings

FIG. 1 is a cross-sectional view of an embodiment;

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is a flowchart of the minimally invasive wiretie-down reset operation of the background art.

In the figure: the novel needle comprises a first needle body 1, a second needle body 2, a guide column 3, a limiting ring 4, a circular groove 5, a limiting pin 6, a spring 7, a clamping groove 8, a first arc-shaped rod 9, a second arc-shaped rod 10, a wedge block 11, a circular ring 12 and a second circular through hole 13.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

An orthopedic steel wire tractor, as shown in fig. 1-2, comprises a first needle body 1 and a second needle body 2, wherein the upper ends of the first needle body 1 and the second needle body 2 are arc-shaped. The first needle body 1 is a circular tube, a guide column 3 is clamped in the circular arc end of the first needle body 1, the left end of the guide column 3 is positioned outside the first needle body 1, and the left end of the guide column 3 is conical. The first needle body 1 is fixedly connected with a limiting ring 4, and the right end of the guide post 3 is contacted with the limiting ring 4. The right end of the guide post 3 is provided with a limiting component which is used for fixing the steel wire. The upper end of the second needle body 2 is provided with a circular groove 5 for the guide post 3 to be inserted, and the side wall of the circular groove 5 is provided with a first circular through hole. A limiting pin 6 is arranged in the first circular through hole in a penetrating mode, and a spring 7 is fixedly connected between the middle of the limiting pin 6 and the inner side of the first circular through hole. The guide post 3 is provided with a clamping groove 8 for inserting the limiting pin 6, and the clamping groove 8 is an annular groove surrounding the guide post 3. The limiting component comprises a first arc-shaped rod 9, a first groove is formed in the right end of the guide column 3, the first arc-shaped rod 9 is rotationally connected to the first groove, a torsion spring is arranged between the first arc-shaped rod 9 and the guide column 3, a second arc-shaped rod 10 is fixedly connected to one end of the guide column 3, gaps which are mutually matched are formed in the free ends of the first arc-shaped rod 9 and the second arc-shaped rod 10, and the free ends of the first arc-shaped rod 9 are abutted against the inner side of the second arc-shaped rod 10. The upper end fixedly connected with of spacer pin 6 is located the wedge 11 outside the circular recess 5, and the second recess that is located the other second recess of first circular through-hole is seted up on the surface of second needle 2, and wedge 11 is located the second recess, leaves the gap between wedge 11's free end and the second recess. The lower end of the first needle body 1 is sleeved with a circular ring 12, an internal thread is arranged in the circular ring 12, the circular ring 12 is in threaded connection with the first needle body 1, and a plurality of second circular through holes 13 parallel to the axis are formed in the circular ring 12 along the circumferential direction.

Working principle: in the initial state, the steel wire extends out from the arc end after being inserted from the linear end of the first needle body 1, and the guide post 3 is clamped in the arc end of the first needle body 1. Before operation, the steel wire is folded in half, and the folded part of the steel wire is opened and sleeved into the inner side of the first arc-shaped rod 9. When the steel wire is sleeved into the inner side of the first arc-shaped rod 9, the free end of the first arc-shaped rod 9 is firstly propped from outside to inside, the first arc-shaped rod 9 rotates around the rotating point on the guide post 3 to the guide post 3, the first arc-shaped rod 9 is separated from contact with the second arc-shaped rod 10, the torsion spring generates torsion, and the steel wire enters the inner side of the first arc-shaped rod 9 from a gap between the first arc-shaped rod 9 and the second arc-shaped rod 10. Then the acting force on the first arc-shaped rod 9 is removed, the first arc-shaped rod 9 is reset under the action of the torsion spring, and the first arc-shaped rod 9 abuts against the inner side of the second arc-shaped rod 10. When the fractured bones of the leg of the patient are required to be reset, an incision is made on one side of the leg of the patient. The first needle body 1 is held to drive the guide post 3 to be inserted from the incision, and the guide post is tightly clung to periosteum from the left side around the bone to the rear side of broken bone. During the process of inserting the first needle body 1, the limiting ring 4 prevents the guide post 3 from integrally entering the first needle body 1. The second needle body 2 is held, and the second needle body 2 is moved from the right side to the rear side of the broken bone from the bone, which is clung to the periosteum, and the position of the second needle body 2 is adjusted until the guide post 3 is inserted into the circular groove 5. The guide post 3 is inserted into the circular groove 5, and the limiting pin 6 is inserted into the clamping groove 8, so that the limiting pin 6 is locked. The second needle body 2 is slowly pulled out along the original path, and the steel wire fixed by the guide post 3 and the limiting component can be slowly pulled out. Finally, the steel wire is drawn out from the incision, the other end of the steel wire is still positioned outside the incision, and then the first needle body 1 is slowly drawn out. After the first needle body 1 is completely drawn out, the two ends of the steel wire are positioned at the same incision, the steel wire winds the normal bone and the broken bone for one circle, and at the moment, the two ends of the steel wire are mutually twisted together at the incision and are gradually screwed, so that the broken bone can be extruded and reset. The problem that the guide rope is easy to break is effectively avoided, and the patient is greatly reduced by only making an operation incision on the leg of the patient. After the second needle body 2 brings the guide post 3 out of the incision, the guide post 3 needs to be taken out of the circular groove 5. The limit pin 6 can be lifted outwards by slightly inserting the fingernail into the gap between the wedge-shaped block 11 and the second needle body 2, so that the limit pin 6 is separated from the clamping groove 8. The guide post 3 can be easily taken out from the circular groove 5 after the limiting pin 6 is separated from the clamping groove 8, so that the effect of conveniently taking out the guide post 3 is achieved. In the process of inserting the guide post 3 into the circular groove 5, as the clamping groove 8 is annular, the limiting pin 6 can be inserted into the clamping groove 8 only after the guide post 3 is inserted into the circular groove 5. Before the operation, after the steel wire is sleeved on the inner side of the first arc-shaped rod 9, the other end of the steel wire is positioned outside the straight end of the first needle body 1, and the steel wire at one end is sequentially inserted into the second circular through hole 13 on the circular ring 12 in a reciprocating manner. The circular ring 12 is rotated, and the circular ring 12 and the thread of the first needle body 1 move towards the circular arc end in a matching way, so that the steel wire is tensioned. After the steel wire is tensioned, the guide post 3 positioned in the arc end is tensioned, so that the first needle body 1 is prevented from being separated from the first needle body 1 in the process that the first needle body 1 carries the guide post 3 to the rear side of the broken bone.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims

1. The utility model provides an orthopedics steel wire tractor, includes first needle (1), second needle (2), its characterized in that: the utility model provides a novel medical needle for the human body, including first needle body (1), second needle body (2) one end is circular-arc, first needle body (1) is the pipe, joint has guide post (3) in the circular-arc end of first needle body (1), guide post (3) one end is located outside first needle body (1), guide post (3) are located the outer one end of first needle body (1) and are conical, fixedly connected with spacing ring (4) in first needle body (1), guide post (3) are located the one end of first needle body (1) and are equipped with spacing subassembly, spacing subassembly is used for fixed steel wire, circular recess (5) that supply guide post (3) male are seted up to the circular-arc end of second needle body (2), first circular through-hole has been seted up to the lateral wall of circular recess (5), wear to be equipped with spacer pin (6) in the first circular through-hole, the middle part of spacer pin (6) and the inboard of first circular through-hole are fixedly connected with spring (7) jointly, set up on guide post (3) and supply spacer pin (6) male spacing groove (8).

2. An orthopedic wire retractor according to claim 1, wherein: the limiting component comprises a first arc-shaped rod (9), one end of the first arc-shaped rod (9) located in the first needle body (1) is rotationally connected with the guide column (3), a torsion spring is arranged between the first arc-shaped rod (9) and the guide column (3), one end of the guide column (3) is fixedly connected with a second arc-shaped rod (10), and the free end of the first arc-shaped rod (9) abuts against the inner side of the second arc-shaped rod (10).

3. An orthopedic wire retractor according to claim 1, wherein: one end of the limiting pin (6) far away from the circular groove (5) is fixedly connected with a wedge block (11) positioned outside the circular groove (5).

4. An orthopedic wire retractor according to claim 1, wherein: the clamping groove (8) is an annular groove surrounding the guide post (3).

5. An orthopedic wire retractor according to claim 1, wherein: the straight section end of the first needle body (1) is sleeved with a circular ring (12), the circular ring (12) is in threaded connection with the first needle body (1), and a plurality of second circular through holes (13) parallel to the axis are formed in the circular ring (12).