Shoulder joint operation drilling positioning device

Abstract

The utility model relates to the field of medical auxiliary instruments. A shoulder joint operation drilling positioning device comprises a guide part, the guide part comprises a hollow guide rod and a positioning transverse guide rod which are sequentially connected, an operation channel used for building a drilling channel is formed in the hollow guide rod, and the positioning transverse guide rod is connected with the area, located above the operation channel, of the hollow guide rod; the guide direction of the operation channel is parallel to the length direction of the positioning transverse guide rod; the positioning piece comprises a baffle plate and a connecting handle which are connected with each other; a guide groove for embedding the positioning transverse guide rod and guiding the positioning transverse guide rod to slide is formed in the top of the baffle, and an opening is formed in the upper end of the guide groove; when the positioning transverse guide rod is located on the guide groove, the operation channel right faces the baffle. According to the utility model, the positioning transverse guide rod guided by the guide groove is embedded into the positioning transverse guide rod, so that a drilled bone tunnel is ensured to be parallel to the surface of an original glenoid cavity, the upper edge of a coracoid graft is recovered to the original height of the defective glenoid cavity, and the stability of a humeral head in the glenoid cavity after operation is ensured.

Description

Technical Field

[0001] The utility model relates to the field of medical auxiliary equipment, in particular to a drilling positioning device. Background Art

[0002] Latarjet surgery is used to treat recurrent shoulder dislocation. The treatment method is to perform positioning drilling on the coracoid process and anterior glenoid. The anterior glenoid is the front and lower part of the scapular glenoid. The doctor cuts off the end of the coracoid process after drilling, and then transplants the cut coracoid process to the anterior glenoid. After aligning the drill hole on the coracoid process with the drill hole on the anterior glenoid, use bolts to penetrate the drill holes of the coracoid process and the anterior glenoid, so that the coracoid process is fixedly connected to the scapular glenoid, thereby preventing the humeral head from dislocating during abduction and external rotation.

[0003] At present, when doctors drill holes in the anterior glenoid, they try to control the drilling direction in the sagittal plane to be parallel to the glenoid surface, and try to keep the front tunnel opening at 3:30-4:00 on the right shoulder and 8:00-8:30 on the left shoulder on the coronal plane. Traditionally, the positioning and drilling are based on the doctor's experience, or a single-plane positioning system similar to the anterior cruciate ligament femoral tunnel guide is used for positioning. However, when positioning the anterior glenoid, deviations are prone to occur, resulting in inaccurate bone tunnel drilling positions, especially inaccurate coronal plane positioning, which causes the bone block to be too high or too low and greatly exceeds the range of the optimal circle of the scapular glenoid, ultimately leading to complications such as bone block absorption, affecting the surgical effect. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a drilling positioning device for shoulder joint surgery, which solves at least one of the above-mentioned technical problems.

[0005] The technical solution of the utility model is: a shoulder joint surgery drilling positioning device, comprising a guide member, characterized in that the guide member comprises a hollow guide rod and a positioning cross guide rod connected in sequence, an operation channel for establishing a drilling channel is opened on the hollow guide rod, and the positioning cross guide rod is connected to the area above the hollow guide rod located on the operation channel;

[0006] The guiding direction of the operation channel is parallel to the length direction of the positioning cross-guide rod;

[0007] It also includes a positioning member, which includes a baffle and a connecting handle that are connected to each other;

[0008] A guide groove is provided on the top of the baffle plate for embedding the positioning cross-guide rod and guiding the positioning cross-guide rod to slide, and the upper end of the guide groove is open;

[0009] When the positioning cross-guide rod is located on the guide groove, the operating channel faces the baffle.

[0010] The utility model combines the guide piece with the positioning piece, and the positioning cross guide rod guided by the guide groove is embedded in the guide piece, thereby realizing the double-plane determination of the drilling position in the sagittal plane and the coronal plane.

[0011] The position of the coronal plane is determined by fine-tuning the position of the baffle on the coronal plane.

[0012] The positioning cross-guide rod overlaps the surface of the glenoid to determine the sagittal position, ensuring that the drilled bone tunnel is parallel to the original glenoid surface, and the upper edge of the coracoid graft is restored to the original height of the defective glenoid, ensuring the stability of the humeral head in the glenoid after surgery. The positioning cross-guide rod is connected to the area above the operating channel with the hollow guide rod, which is convenient for passing through the center of the operating channel and the lower surface of the positioning cross-guide rod to have a fixed eccentricity, ensuring that the bone tunnel wall and the glenoid plane maintain a safe distance, and the hollow drill will not blow up the glenoid plane. The baffle can effectively protect the safety of the tissue in front of the glenoid, and prevent the hollow drill from injuring important tissues such as blood vessels and nerves in front when drilling the medullary canal.

[0013] The utility model embeds the guide groove on the baffle plate and the positioning cross guide rod to form a structure similar to a mortise and tenon joint, so that the embedded hollow guide rod will not rotate when drilling a bone tunnel, and the hollow guide rod and the baffle plate are mutually stable and referenced to each other, so as to achieve three-dimensional accurate positioning of the sagittal plane, the coronal plane and the cross section.

[0014] Further preferably, the hollow guide rod is plugged into the handle, which is convenient for switching components and replacing guide members, and realizing switching of guide members with different eccentricities.

[0015] Further preferably, the length direction of the handle is perpendicular to the length direction of the hollow guide rod.

[0016] Further preferably, the positioning cross-guide rod comprises a proximal portion adjacent to the hollow guide rod and a distal portion away from the hollow guide rod, and the distal portion is connected to the central position of the proximal portion;

[0017] The distal end portion matches the guide groove.

[0018] Further preferably, the upper side of the positioning cross-guiding rod is provided with scale markings arranged along the length direction of the positioning cross-guiding rod.

[0019] Convenient for length measurement.

[0020] Further preferably, the hollow guide rod comprises a horizontally arranged guide portion and an upwardly extending extension portion, the guide portion is provided with the operating channel, an end of the guide portion away from the handle is connected to the extension portion, and the extension portion is fixedly connected to the end of the positioning transverse guide rod;

[0021] A reinforcement structure is connected between the guide portion and the extension portion.

[0022] Further preferably, the hollow guide rod is provided with two operation channels which are arranged side by side in a transverse manner.

[0023] The operating channel is used to pass a cannulated drill and drill a hole in the anterior inferior aspect of the glenoid.

[0024] Further preferably, the distance between two operation channels arranged side by side in a transverse direction is 10 mm.

[0025] Further preferably, the baffle is provided with a grid-shaped laser beam for measuring the area of ​​the glenoid defect and assisting in determining the size of the bone graft required for the defect area.

[0026] Further preferably, the end of the baffle is provided with a limiting curved plate portion for partially surrounding the glenoid cavity.

[0027] Further preferably, the baffle is provided with a positioning recess for embedding a hollow drill.

[0028] The positioning depression can be an elliptical depression, which is used to prevent the hollow drill from causing damage to the front blood vessels and nerve bundles when drilling the bone tunnel. It is convenient for single-hole and double-hole hollow guide rods.

[0029] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0030] 1) Through the fixed eccentricity, the bone tunnel wall is ensured to maintain a safe distance from the glenoid plane in the sagittal plane, and the hollow drill will not blow up the glenoid plane. It also ensures that the drilled bone tunnel is parallel to the original glenoid surface, and the upper edge of the coracoid graft is restored to the original height of the defective glenoid, ensuring the stability of the humeral head in the glenoid after surgery.

[0031] 2) The hollow guide rod and the handle are detachable and quick-connected, and the guide piece with the eccentric distance (the center of the operating channel and the lower surface of the positioning cross guide rod) can be replaced at any time during the operation according to clinical needs.

[0032] 3) The guide groove on the baffle plate and the positioning cross guide rod are embedded to form a mortise and tenon structure, so that the embedded hollow guide rod will not rotate when drilling the bone tunnel, and the hollow guide rod and the baffle plate are mutually stable and referenced to each other, so as to achieve three-dimensional accurate positioning of the sagittal plane, coronal plane and cross section.

[0033] 4) The dual-guide drilling design can quickly locate the positions of two bone tunnels at the same time, with accurate and rapid positioning.

[0034] 5) On the one hand, the baffle can better fit the defective anterior and inferior surface of the glenoid fossa, and on the other hand, it is used to simulate the coracoid bone block, making it easier for doctors to determine the position and size of the coracoid bone block after transplantation, especially the precise positioning of the anterior exit of the bone tunnel on the coronal plane.

[0035] 6) The baffle can effectively protect the safety of the tissue in front of the glenoid. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a structural schematic diagram of a guide member using an operating channel in a specific embodiment 1 of the utility model;

[0037] Figure 2 This is a structural schematic diagram of a guide member using two operating channels in specific embodiment 1 of the utility model;

[0038] Figure 3 This is a schematic diagram of a guide member and a handle of an operating channel in a combined state in a specific embodiment 1 of the utility model;

[0039] Figure 4 This is a schematic diagram of the guide members and handles of two operation channels in the specific embodiment 1 of the utility model in the combined state;

[0040] Figure 5 This is a schematic structural diagram of a positioning member in a specific embodiment 1 of the utility model;

[0041] Figure 6 It is a structural schematic diagram of the specific embodiment 1 of the utility model in use state.

[0042] In the figure: 1 is a hollow guide rod, 2 is a positioning transverse guide rod, 3 is a handle, 4 is a baffle, 41 is a guide groove, 42 is a limit curved plate portion, 5 is a connecting rod, 6 is a hand-held handle, and 11 is an operating channel. DETAILED DESCRIPTION

[0043] See also Figures 1 to 6, Specific embodiment 1, a shoulder joint surgery drilling positioning device, including a guide member, the guide member includes a hollow guide rod 1 and a positioning cross-guide rod 2 connected in sequence, an operation channel 11 for establishing a drilling channel is provided on the hollow guide rod 1, and the positioning cross-guide rod 2 is connected to the hollow guide rod 1 in the upper area of ​​the operation channel; the guiding direction of the operation channel 11 is parallel to the length direction of the positioning cross-guide rod 2; it also includes a positioning member, the positioning member includes a baffle 4 and a connecting handle that are connected and arranged; the top of the baffle 4 is provided with a guide groove 41 for embedding the positioning cross-guide rod 2 and guiding the positioning cross-guide rod 2 to slide, and the upper end of the guide groove 41 is open; when the positioning cross-guide rod 2 is located on the guide groove, the operation channel is opposite to the baffle. The utility model combines the guide member and the positioning member, and the positioning cross-guide rod 2 guided by the guide groove is embedded therein, thereby realizing the determination of the drilling position. The coronal position is determined by fine-tuning the position of the baffle on the coronal plane.

[0044] The positioning cross-guide rod 2 overlaps the surface of the glenoid to determine the sagittal position, ensuring that the drilled bone tunnel is parallel to the original glenoid surface, and the upper edge of the coracoid graft is restored to the original height of the defective glenoid, ensuring the stability of the humeral head in the glenoid after surgery. The positioning cross-guide rod 2 is connected to the hollow guide rod 1 in the upper area of ​​the operating channel, which is convenient for passing through the center of the operating channel and the lower surface of the positioning cross-guide rod 2. There is a fixed eccentricity to ensure that the bone tunnel wall and the glenoid plane maintain a safe distance, and the hollow drill will not explode the glenoid plane. The baffle can effectively protect the safety of the tissue behind the glenoid, avoiding the hollow drill from injuring the posterior tissue when drilling the medullary canal.

[0045] The hollow guide rod 11 is plugged with the handle 3, which is convenient for switching components and for replacing guide members, so as to realize switching of guide members with different eccentricities. The length direction of the handle is perpendicular to the length direction of the hollow guide rod 1.

[0046] The positioning cross-guide rod 2 includes a proximal portion adjacent to the hollow guide rod 1 and a distal portion away from the hollow guide rod 1, wherein the distal portion is connected to the central position of the proximal portion; the distal portion matches the guide groove. The width of the distal portion is smaller than the width of the proximal portion. The upper side of the positioning cross-guide rod 2 is provided with scale marks arranged along the length direction of the positioning cross-guide rod 2. This facilitates length measurement. The side of the positioning cross-guide rod adjacent to the hollow guide rod is the 0 point of the scale mark. The spacing between adjacent scale marks can be 2 mm.

[0047] The hollow guide rod 1 includes a horizontally arranged guide portion and an upwardly extending extension portion, wherein the guide portion is provided with an operation channel, and the end of the guide portion away from the handle is connected to the extension portion, which is fixedly connected to the end of the positioning cross guide rod 2; a reinforcement structure is connected between the guide portion and the extension portion.

[0048] See also Figure 1 and Figure 3, an operating channel is provided on the hollow guide rod 1. Alternatively, see Figure 2 and Figure 4 The hollow guide rod 1 is provided with two transversely arranged operating channels. The operating channels are used to drill holes in the anterior and lower part of the glenoid fossa through a hollow drill. The distance between the two transversely arranged operating channels is 10m.

[0049] The baffle 4 is provided with a grid-shaped laser beam for measuring the area of ​​the glenoid defect and assisting in determining the size of the graft bone block required for the defect area.

[0050] The width of the baffle plate 4 is provided with different sizes. It is convenient for different sizes of scapular glenohumeral ...

[0051] The end of the baffle 4 is provided with a limiting curved plate portion 42 for partially surrounding the glenoid. The limiting curved plate portion 42 extends outward by 10 mm and retracts inward by 10 mm. The limiting curved plate portion is located on the left or right side of the baffle, which is convenient for switching between left and right shoulders.

[0052] The end of one side of the baffle plate 4 is provided with a limited curved plate portion. The end of the other side of the baffle plate 4 is connected with a connecting handle. The connecting handle includes a connecting rod 5 and a hand-held handle 6 which are connected in sequence.

[0053] The baffle is provided with a positioning recess for embedding the hollow drill. The positioning recess may be an elliptical recess, which is used to prevent the hollow drill from causing damage to the front blood vessels and nerve bundles when drilling the bone tunnel. It is convenient for use in single-hole and double-hole hollow guide rods.

[0054] The structure in the attached drawings of the utility model is used for the left shoulder joint. The shoulder joint surgery drilling positioning device for the left shoulder joint and the shoulder joint surgery drilling positioning device for the right shoulder joint are arranged in a left-right mirror-symmetrical manner.

[0055] Directions:

[0056] Step 1: Arthroscopic cleaning, decortication of the glenoid defect, preparation of the bone bed, placement of the baffle into the glenoid defect through the anterior approach, and determination of the size of the graft bone block required by the marking line on the baffle;

[0057] Step 2: Cut the coracoid process and the conjoint tendon as the graft bone block, preform 1-2 bone holes in the center of the bone block, and use high-strength sutures to pass through the graft bone holes and the round holes of the titanium plate with loops for later use;

[0058] Step 3: Place the baffle plate to the glenoid defect area through the anterior approach, slide the positioning guide rod of the guide piece into the guide groove of the baffle plate through the posterior approach, fine-tune the position of the baffle plate and the positioning guide rod (the coronal position is determined by fine-tuning the position of the baffle plate on the coronal plane; the sagittal position is determined by overlapping the positioning cross guide rod 2 on the glenoid surface), the operating channel of the guide piece is facing the glenoid defect area, and a 2.4 mm hollow drill (with an inner needle) is drilled along the operating channel of the guide piece to drill a hole, remove the inner needle, and insert a traction line or steel wire;

[0059] Step 4: Use traction line or steel wire to pass the high-strength suture for fixation through the bone tunnel and lead it out from the back, tighten the high-strength line from the back, pull the titanium plate with loop and the graft bone block to the glenoid defect area, adjust the fixed position of the bone block, tighten the suture and tie a knot to complete the final fixation.

[0060] The device can also be used in iliac bone grafting surgery (Eden-Hybbinette surgery) to treat shoulder instability. The surgical method is similar to coracoid bone grafting.

[0061] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A shoulder joint surgery drilling positioning device, comprising a guide member, characterized in that: The guide member comprises a hollow guide rod and a positioning cross guide rod connected in sequence, the hollow guide rod is provided with an operation channel for establishing a drilling channel, and the positioning cross guide rod is connected to the area of ​​the hollow guide rod located above the operation channel; The guiding direction of the operation channel is parallel to the length direction of the positioning cross-guide rod; It also includes a positioning member, which includes a baffle and a connecting handle that are connected to each other; A guide groove is provided on the top of the baffle plate for embedding the positioning cross-guide rod and guiding the positioning cross-guide rod to slide, and the upper end of the guide groove is open; When the positioning cross-guide rod is located on the guide groove, the operating channel faces the baffle.

2. A shoulder joint surgery drilling positioning device according to claim 1, characterized in that: The hollow guide rod is plugged into the handle.

3. A shoulder joint surgery drilling positioning device according to claim 2, characterized in that: The length direction of the handle is perpendicular to the length direction of the hollow guide rod.

4. The shoulder joint surgery drilling positioning device according to claim 1, characterized in that: The positioning cross-guide rod comprises a proximal end portion adjacent to the hollow guide rod and a distal end portion away from the hollow guide rod, wherein the distal end portion is connected to a central position of the proximal end portion; The distal end portion matches the guide groove.

5. The shoulder joint surgery drilling positioning device according to claim 1, characterized in that: The upper side of the positioning cross guide rod is provided with scale marks arranged along the length direction of the positioning cross guide rod.

6. A shoulder joint surgery drilling positioning device according to claim 2, characterized in that: The hollow guide rod comprises a horizontally arranged guide portion and an upwardly extending extension portion, the guide portion is provided with the operating channel, the end of the guide portion away from the handle is connected to the extension portion, and the extension portion is fixedly connected to the end of the positioning cross guide rod; A reinforcement structure is connected between the guide portion and the extension portion.

7. The shoulder joint surgery drilling positioning device according to claim 1, characterized in that: The hollow guide rod is provided with two operation channels which are arranged side by side in a transverse direction.

8. The shoulder joint surgery drilling positioning device according to claim 1, characterized in that: The baffle is provided with grid-shaped laser rays.

9. The shoulder joint surgery drilling positioning device according to claim 1, characterized in that: The end of the baffle is provided with a limiting curved plate portion for partially surrounding the glenoid cavity.

10. The shoulder joint surgery drilling positioning device according to claim 1, characterized in that: The baffle is provided with a positioning recess for embedding a hollow drill.

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