Placement tool for double-loop titanium plate in acromioclavicular joint dislocation operation
By designing a placement tool that matches the T-tube and push-plate push-rod, the problem of difficulty in placement of the titanium plate on the lower surface of the coracoid process in acromioclavicular dislocation surgery is solved, and minimally invasive operation is achieved, reducing trauma and complications and shortening the surgical time.
Patent Information
- Application Number
- CN202421719579.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-19
AI Technical Summary
In existing acroclavicular dislocation surgery, it is difficult to place the titanium plate on the lower surface of the coracoid process, and requires shoulder arthroscopic auxiliary operation or large incisions, resulting in large trauma, many complications, and long surgery time.
A placement tool including T-tube, push plate and push rod is designed. The T-tube is equipped with guide grooves and thread pass grooves. The push plate and push rod are used in conjunction with the push rod. The double loop titanium plate is flipped through sutures to simplify the operation steps and reduce trauma.
Minimally invasive operations are achieved, reducing patient trauma, reducing complications, shortening surgical time and simplifying surgical steps.
Smart Images
Figure CN223041591U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a placement tool for a double-loop titanium plate in acromioclavicular joint dislocation surgery. Background Art
[0002] Acromioclavicular joint dislocation is a common orthopedic disease, often requiring surgical reduction and internal fixation. The current mainstream fixation device is double-loop suspension titanium plate fixation.
[0003] The double-loop suspension titanium plate is composed of two perforated titanium plates and a pulling wire. During the surgical operation, the surgeon needs to pass one titanium plate through the bone tunnel from the upper surface of the clavicle, then through the coracoid bone tunnel, and place it on the lower surface of the coracoid. The other titanium plate is placed at the bone tunnel opening on the upper surface of the clavicle. Subsequently, the pulling wire is tightened to press down and reduce the clavicle. After tying and fixing the pulling wire, the acromioclavicular joint dislocation can be fixed.
[0004] During the above surgical operation, there are great difficulties in placing the titanium plate on the lower surface of the coracoid. It often requires arthroscopic assistance or a larger incision to be made to fully expose the lower surface of the coracoid. Therefore, in order to facilitate the operation of the surgeon, reduce the surgical injury of the patient, reduce complications, and shorten the operation time, we have developed a placement tool for a double-loop titanium plate for the surgical treatment of acromioclavicular joint dislocation to achieve minimally invasive operation, reduce the trauma of the patient, simplify the steps, and shorten the operation duration. Content of the Utility Model
[0005] 1. Technical problems to be solved:
[0006] In view of the above technical problems, the utility model provides a placement tool for a double-loop titanium plate in acromioclavicular joint dislocation surgery.
[0007] 2. Technical solutions:
[0008] A placement tool for a double-loop titanium plate in acromioclavicular joint dislocation surgery includes a T-shaped tube, a push plate, and a push rod. The T-shaped tube is provided with a through lumen. On the inner side wall of the lumen, two guide grooves are symmetrically arranged on the left and right. The double-loop titanium plate is inserted between the two guide grooves from the front port of the T-shaped tube and is slidably connected to the guide grooves. The push plate is arranged behind the double-loop titanium plate and is slidably connected in the lumen of the T-shaped tube. One end of the push rod is fixed to the side of the push plate away from the double-loop titanium plate, and the other end of the push rod extends out of the lumen of the T-shaped tube and is fixedly connected to a push handle. The double-loop titanium plate is provided with two symmetrically arranged wire holes on the left and right. A suture for realizing loop turning is arranged in the wire holes. A through wire groove is arranged on the tube wall of the T-shaped tube, and a corresponding wire passing notch is arranged on the side of the push plate facing the wire groove.
[0009] Furthermore, a communicating wire passing hole is arranged at the end of the wire groove, and the radial dimension of the wire passing hole is larger than the width of the wire groove.
[0010] Further, a rubber ring is provided on the outer side of the push plate close to the inner wall of the lumen.
[0011] Further, a depth limiting ring is provided on the outer wall of the T-shaped tube. The depth limiting ring can move back and forth along the outer wall of the T-shaped tube and can be locked on the outer wall of the T-shaped tube. A depth scale is provided on the outer wall of the T-shaped tube, and an opening corresponding to the wire groove and the wire hole is also provided on the depth limiting ring.
[0012] Preferably, the depth limiting ring includes two arc-shaped clamping plates symmetrically clamped on the outer wall of the T-shaped tube. The ends of the two arc-shaped clamping plates are hinged on the arc-shaped connecting plate. There is a section of interval between the front ends of the two arc-shaped clamping plates, and this interval is the opening corresponding to the wire groove and the wire hole. Connecting rods are hinged on the sides of the two arc-shaped clamping plates. The connecting rods are hinged to the sliding sleeve. The sliding sleeve is slidably connected to the screw rod. The screw rod is threadedly connected to the connecting plate, and one end of the screw rod passing through the sliding sleeve is fixedly connected to the knob.
[0013] Further, two sliders are symmetrically provided on both sides of the push plate. The sliders are slidably connected to the guide grooves, and the push rod is eccentrically fixed on the push plate.
[0014] Further, the screw rod is composed of two parts: a smooth section and a threaded section. The threaded section is threadedly connected to the connecting plate, and the sliding sleeve is slidably connected to the smooth section.
[0015] Further, the front end face of the push plate is a convex arc surface.
[0016] 3. Beneficial effects:
[0017] The utility model provides a placement tool for a double-loop titanium plate in the reduction and internal fixation surgery of acromioclavicular joint dislocation, which has the characteristics of simple structure and easy operation, facilitates the operation of surgeons, reduces surgical injuries to patients, reduces complications, and shortens the operation time. Description of the drawings
[0018] Figure 1 It is a schematic diagram of the overall structure of the placement tool for the double-loop titanium plate in the acromioclavicular joint dislocation surgery of the utility model;
[0019] Figure 2 It is a cross-sectional view of the placement tool for the double-loop titanium plate in the acromioclavicular joint dislocation surgery of the utility model;
[0020] Figure 3 It is a schematic diagram of the combined structure of the push plate, the push rod and the push handle of the utility model;
[0021] Figure 4 It is a schematic diagram of the front end face of the T-shaped tube of the utility model;
[0022] Figure 5 It is a rear view of the push plate of the utility model;
[0023] Figure 6It is a structural schematic diagram of the depth limiting ring of the utility model. DETAILED DESCRIPTION
[0024] The utility model is described in detail below in conjunction with the accompanying drawings.
[0025] As attached Figure 1 To Attachment Figure 6 ,
[0026] Embodiment 1:
[0027] A tool for placing a double-loop titanium plate in acromioclavicular joint dislocation surgery comprises a T-tube 1, a push plate 2 and a push rod 3. The T-tube 1 is provided with a tubular cavity that passes through from front to back, and two guide grooves 4 are symmetrically provided on the inner wall of the tubular cavity. The double-loop titanium plate 5 is inserted between the two guide grooves 4 from the front port of the T-tube 1 and is slidably connected to the guide grooves 4. The push plate 2 is arranged behind the double-loop titanium plate 5 and is slidably connected in the tubular cavity of the T-tube 1. One end of the push rod 3 is fixed to a side of the push plate 2 away from the double-loop titanium plate 5, and the other end of the push rod 3 extends out of the tubular cavity of the T-tube 1 and is fixedly connected to a push handle 6. Two symmetrical thread holes are provided on the double-loop titanium plate 5, and sutures for realizing loop turning are provided in the thread holes. A thread passing groove 7 is provided on the tube wall of the T-tube 1, and a corresponding thread passing notch 8 is provided on the side of the push plate 2 facing the thread passing groove 7. In this embodiment, the diameter of the T-tube 1 is 5.0 mm, the diameter of the tube cavity is 3.8 mm, the depth of the guide groove is 0.4 mm, the diameter of the push rod is 1.5 mm, and the angle of the wire notch 8 is 120°; the end of the wire groove 7 is provided with a connected wire hole 9, and the radial dimension of the wire hole 9 is greater than the width of the wire groove 7.
[0028] Before using the double-loop titanium plate placement tool in the acromioclavicular joint dislocation surgery of the utility model, the doctor first drills a bone channel on the patient's clavicle and coracoid process with a special surgical drill, and then inserts the double-loop titanium plate 5 between the two guide grooves 4 from the front side port of the T-tube 1, and after arranging the sutures, pulls out the wire hole 9 along the wire groove 7 and the wire notch 8 on the push plate 2, holds the horizontal part of the end of the T-tube 1, inserts the T-tube 1 into the bone channel on the clavicle and coracoid process to a certain depth, pushes the push handle 6 to drive the push rod 3, and the push rod 3 drives the push plate 2, and the push plate 2 pushes the double-loop titanium plate 5 until it is out of the tube cavity of the T-tube 1, and the vertical double-loop titanium plate 5 is turned over to a horizontal direction through the sutures. At this time, the double-loop titanium plate 5 is horizontal at the bottom of the coracoid process, and another titanium plate is placed in the ring of the double-loop titanium plate 5, and then the sutures are tightened to press the clavicle down and reset, and after the sutures are knotted and fixed, the dislocated acromioclavicular joint can be fixed. It should be noted that adjusting the direction of the double-loop titanium plate 5 by sutures belongs to the prior art.
[0029] A rubber ring is provided on the outer surface of the push plate 2 close to the inner wall of the tube cavity, and the rubber ring increases the friction resistance to prevent the push plate 2 from sliding randomly.
[0030] Embodiment 2:
[0031] A depth limit ring 10 is provided on the outer wall of the T-shaped tube 1. The depth limit ring 10 can move back and forth along the outer wall of the T-shaped tube 1 and can be locked on the outer wall of the T-shaped tube 1. A depth scale 11 is provided on the outer wall of the T-shaped tube 1. The depth limit ring 10 is also provided with openings corresponding to the wire groove 7 and the wire hole 9 to prevent blocking the wire groove 7 and the wire hole 9 during movement, and the size should be larger than the sizes of the wire groove 7 and the wire hole 9. According to the length of the bone tunnel measured during the operation, the insertion depth of the T-shaped tube 1 can be controlled. After being inserted to a certain depth, it will be blocked by the depth limit ring 10, and the depth limit ring 10 can be fixed at any depth position on the outer wall of the T-shaped tube 1.
[0032] Specifically, the depth limit ring 10 includes two arc-shaped clamping plates 101 symmetrically clamped on the outer wall of the T-shaped tube 1. The ends of the two arc-shaped clamping plates 101 are hinged on the arc-shaped connecting plate 102. There is a gap between the fronts of the two arc-shaped clamping plates 101, and this gap is the opening corresponding to the wire groove 7 and the wire hole 9. Connecting rods 103 are hinged on the sides of the two arc-shaped clamping plates 101. The connecting rods 103 are hinged to the sliding sleeve 104. The sliding sleeve 104 is slidably connected to the screw rod 105. The screw rod 105 is threadedly connected to the connecting plate 102. One end of the screw rod 105 passing through the sliding sleeve 104 is fixedly connected to the knob 106.
[0033] Its working principle is as follows: Rotating the knob 106 drives the screw rod 105 to rotate. The screw rod 105 is threadedly screwed into the connecting plate 102 and advances forward. The inner side of the knob 106 presses the sliding sleeve 104. The sliding sleeve 104 pushes the two arc-shaped clamping plates 101 to rotate through the two hinged connecting rods 103, so that the two arc-shaped clamping plates 101 tightly clamp on the outer wall of the T-shaped tube 1. When clamping, move the arc-shaped clamping plate 101 to the corresponding depth scale according to the length of the bone tunnel measured during the operation.
[0034] Example 3:
[0035] Two sliders 201 are symmetrically provided on both sides of the push plate 2. The sliders 201 are slidably connected to the guide groove 4. The push rod 3 is eccentrically fixed on the push plate 2. The push plate 2 can be prevented from rotating through the sliders 201 slidably connected to the guide groove, which may cause its wire passing notch 8 to deviate from the direction of the wire groove 7.
[0036] Example 4:
[0037] The screw rod 105 is composed of a smooth section and a threaded section. The threaded section is threadedly connected to the connecting plate 102, and the sliding sleeve 104 is slidably connected to the smooth section.
[0038] Example 5:
[0039] The front end face of the push plate 2 is a convex arc surface. After the push plate 2 pushes the double-loop titanium plate 5 out of the lumen of the T-shaped tube 1, and continues to push it outwards, the front end face of the push plate 2 slightly protrudes from the T-shaped tube 1. During the process of flipping the vertical double-loop titanium plate 5 into a horizontal position through the suture, the two ends of the suture of the double-loop titanium plate 5 are alternately pulled. If the double-loop titanium plate 5 has been adjusted to a horizontal position, a lever structure will be formed with the protruding front end face of the push plate 2 as the fulcrum, and there will be a slight left and right shaking feeling. Therefore, it can be used to judge whether the adjustment of the double-loop titanium plate 5 is completed and placed in an ideal position.
[0040] Although the present utility model has been disclosed above with preferred embodiments, they are not used to limit the present utility model. Any person skilled in this art can make various changes or modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the protection scope of the claims of this application.
Claims
1. A tool for placing a double-loop titanium plate in acromioclavicular joint dislocation surgery, characterized in that: It includes a T-tube, a push plate and a push rod. The T-tube is provided with a tubular cavity running through from front to back. Two guide grooves are symmetrically provided on the inner wall of the tubular cavity. A double-loop titanium plate is inserted between the two guide grooves from the front port of the T-tube and is slidably connected to the guide grooves. The push plate is arranged behind the double-loop titanium plate and is slidably connected in the tubular cavity of the T-tube. One end of the push rod is fixed on a side of the push plate away from the double-loop titanium plate, and the other end of the push rod extends out of the tubular cavity of the T-tube and is fixedly connected to the push handle. The double-loop titanium plate is provided with two symmetrical wire holes, and sutures for realizing loop turning are provided in the wire holes. A penetrating wire groove is provided on the tube wall of the T-tube, and a corresponding wire notch is provided on the side of the push plate facing the wire groove.
2. The double-loop titanium plate placement tool in acromioclavicular joint dislocation surgery according to claim 1, characterized in that: A connected wire-passing hole is provided at the end of the wire-passing groove, and a radial dimension of the wire-passing hole is greater than a width of the wire-passing groove.
3. The double-loop titanium plate placement tool in acromioclavicular joint dislocation surgery according to claim 1, characterized in that: A rubber ring is arranged on the outer side surface of the push plate close to the inner wall of the tube cavity.
4. The double-loop titanium plate placement tool in acromioclavicular joint dislocation surgery according to any one of claims 1 to 3, characterized in that: The outer wall of the T-tube is provided with a depth limiting ring, which can move forward and backward along the outer wall of the T-tube and can be locked on the outer wall of the T-tube. The outer wall of the T-tube is provided with a depth scale, and the depth limiting ring is also provided with openings corresponding to the wire groove and the wire hole.
5. The double-loop titanium plate placement tool in acromioclavicular joint dislocation surgery according to claim 4, characterized in that: The depth limiting ring includes two arc-shaped clamping plates symmetrically clamped on the outer wall of the T-tube, the ends of the two arc-shaped clamping plates are hinged on the arc-shaped connecting plate, there is a gap between the front ends of the two arc-shaped clamping plates, and the gap is the opening corresponding to the wire groove and the wire hole, the sides of the two arc-shaped clamping plates are hinged with connecting rods, the connecting rods are hinged to the sliding sleeves, the sliding sleeves are slidably connected to the screw rods, the screw rods are threadedly connected to the connecting plate, and the screw rods pass through one end of the sliding sleeves to fix the connecting knobs.
6. The double-loop titanium plate placement tool in acromioclavicular joint dislocation surgery according to claim 5, characterized in that: Two sliding blocks are symmetrically arranged on both sides of the push plate. The sliding blocks are slidably connected to the guide grooves, and the push rod is eccentrically fixed on the push plate.
7. The double-loop titanium plate placement tool in acromioclavicular joint dislocation surgery according to claim 6, characterized in that: The screw rod is composed of a smooth section and a threaded section. The threaded section is threadedly connected to the connecting plate, and the sliding sleeve is slidably connected to the smooth section.
8. The double-loop titanium plate placement tool in acromioclavicular joint dislocation surgery according to claim 7, characterized in that: The front end surface of the push plate is a convex curved surface.