CN222075234U - Exposure spreader for cartilage injury focus of talus bone - Google Patents
Exposure spreader for cartilage injury focus of talus bone Download PDFInfo
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- CN222075234U CN222075234U CN202322787164.0U CN202322787164U CN222075234U CN 222075234 U CN222075234 U CN 222075234U CN 202322787164 U CN202322787164 U CN 202322787164U CN 222075234 U CN222075234 U CN 222075234U
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- handle
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- movable handle
- fixing
- spreader
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- 210000004233 talus Anatomy 0.000 title claims description 31
- 206010007710 Cartilage injury Diseases 0.000 title claims description 19
- 210000000544 articulatio talocruralis Anatomy 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 230000003902 lesion Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 7
- 210000000845 cartilage Anatomy 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 6
- 210000000988 bone and bone Anatomy 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 5
- 210000001519 tissue Anatomy 0.000 abstract description 5
- 208000027418 Wounds and injury Diseases 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 208000014674 injury Diseases 0.000 abstract description 3
- 230000002980 postoperative effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 210000000459 calcaneus Anatomy 0.000 description 5
- 210000002303 tibia Anatomy 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 210000003423 ankle Anatomy 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 208000024891 symptom Diseases 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000000735 allogeneic effect Effects 0.000 description 1
- 208000022542 ankle injury Diseases 0.000 description 1
- 210000001188 articular cartilage Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000001185 bone marrow Anatomy 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 208000031513 cyst Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002082 fibula Anatomy 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 210000000281 joint capsule Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 210000005065 subchondral bone plate Anatomy 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
本实用新型涉及医疗器械技术领域，具体涉及一种距骨骨软骨损伤病灶显露撑开器，包括固定柄，固定柄的一侧固设有支条，支条上滑动连接有活动柄和用于限制活动柄的相对移动的锁紧机构，固定柄和活动柄的末端均设有固定钉，固定柄与活动柄相配合，控制两个固定钉将踝关节撑开并固定。本实用新型可有效牵开显露目标组织，以实现距骨滑车后方的最大范围显露，降低病灶显露难度；不易造成踝关节面骨量缺损及损伤软骨，利于患者术后恢复；可简化手术操作，节省人工，降低手术强度；形状简单，简化了结构和制作工艺，易于收纳，并且零件损耗时，可进行单独更换，降低使用成本；适合在临床上的实际应用，符合踝关节解剖、关节运动特征以及生物力学的特点。
The utility model relates to the technical field of medical devices, and specifically to a talar osteochondral injury lesion exposure spreader, comprising a fixed handle, a support bar fixed on one side of the fixed handle, a movable handle and a locking mechanism for limiting the relative movement of the movable handle slidably connected to the support bar, and fixed nails are provided at the ends of the fixed handle and the movable handle, and the fixed handle cooperates with the movable handle to control the two fixed nails to spread and fix the ankle joint. The utility model can effectively pull away and expose the target tissue to achieve the maximum range of exposure behind the talar pulley, reducing the difficulty of lesion exposure; it is not easy to cause bone defects and damaged cartilage on the ankle joint surface, which is beneficial to the patient's postoperative recovery; it can simplify surgical operations, save labor, and reduce surgical intensity; it has a simple shape, simplified structure and manufacturing process, is easy to store, and when parts are damaged, they can be replaced separately to reduce the cost of use; it is suitable for practical clinical applications and conforms to the characteristics of ankle joint anatomy, joint movement characteristics and biomechanics.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to a spreader for exposing a cartilage injury focus of talus bone.
Background
Talus cartilage injury (Osteochondral Lesions of the Talus, OLT) is a common articular cartilage injury, chang Ji occurs in ankle injuries, manifesting as spalling of talus cartilage and involvement of subchondral bone, which can incorporate talar cysts, leading to ankle pain, instability, osteoarthritis, affecting the patient's daily life, and even leading to disability in the patient. Conservative treatment can be selected for shallow, small-scale, light-symptom OTLs, but OLT for which conservative treatment is ineffective usually requires surgical treatment, arthroscopic clearance+bone marrow stimulation (BMS) is the most commonly adopted technique for treating OLT, and is applicable to OLT with clinical symptoms, lesions ranging from <107.4mm 2 and/or diameters <10.2mm, and for OLT with larger lesions, open surgery autologous/allogeneic talus cartilage transplantation is required.
Because the focus of OLT is mostly positioned at the rear inner side of the fornix of talus, the focus is deep, and the bone resistance of the inner malleolus and the outer malleolus is stored, the inner malleolus is always needed to be cut so as to realize enough exposure of the focus in the joint, the operation is required to be high, the difficulty is high, the recovery is slow, cartilage is easy to damage, the bone mass defect of the ankle joint surface is caused, and the related complications of the osteotomy exist after the operation.
At present, in the open operation of the soft injury of the talus bone with deep focus, the following methods are mostly adopted to obtain a good direct-view exposure range:
1. The method is improved, and the partial osteotomy replaces the traditional integral osteotomy of the medial malleolus or the lateral malleolus. The method has the following defects of easy damage to cartilage and damage to ankle bone mass, related complications of osteotomy and slow recovery.
2. Auxiliary instruments are used to increase the exposure of the talus scooter surface, such as the medial malleolus posterior approach and the HINTERMAN spreader used to assist the exposure, the temporary external fixation frame spreader used to increase the medial-lateral approach talus exposure of the ankle joint, etc. This method has the disadvantage that the lesion is deep enough to be difficult to reveal, the surgical field is narrow, and the surgery is easily obstructed.
Therefore, the focus exposure spreader suitable for the deep focus talus soft injury open operation is researched, and the pain and the difficulty faced in the operation can be effectively solved.
Disclosure of utility model
Aiming at the technical problems in the prior art, the utility model aims to provide a focus exposure spreader for the cartilage injury focus of talus, which can maintain the overstretching position of an ankle joint, effectively retract exposure target tissues and realize the maximum range exposure behind a talus pulley.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
The utility model provides a talus cartilage injury focus shows spreader, includes the fixed handle, and one side of fixed handle has set firmly a branch strip, and sliding connection has movable handle and the locking mechanism who is used for restricting the relative movement of movable handle on the branch strip, and the end of fixed handle and movable handle all is equipped with the staple, and the fixed handle cooperatees with movable handle, locking mechanism, controls two staples and struts and fixes the ankle joint.
Preferably, the connecting end of the movable handle and the support bar is provided with a sliding hole which is matched with the size of the support bar, and the support bar is inserted into the sliding hole.
Preferably, the branch is a rack or a threaded rod.
As one preferable mode, the locking mechanism comprises an adjusting nut and a fixing nut, wherein the adjusting nut is arranged on one side, close to the fixing handle, of the movable handle, the fixing nut is arranged on one side, far away from the fixing handle, of the movable handle, and the adjusting nut and the fixing nut are nuts with internal threads matched with the outer wall of the supporting strip.
Preferably, the fixing nail comprises an upper fixing nail and a lower fixing nail, the tail ends of the fixing handle and the movable handle are respectively provided with a through hole, the upper fixing nail is inserted into the through hole of the fixing handle, and the lower fixing nail is inserted into the through hole of the movable handle.
Preferably, the engagement of the staple with the through-hole is a clearance fit.
Preferably, the length of the fixing handle is 5cm, and the length of the branch is 12cm.
Preferably, the fixing handle and the supporting strip are integrally formed into an L-shaped structure.
Preferably, the length of the fixing nail is 10cm, and the tail end of the fixing nail is a pointed drill bit in a prismatic shape.
As a preferable mode, the fixed handle, the branch bar, the movable handle, the fixed nail and the nut are all made of medical stainless steel materials.
In general, the utility model has the following advantages:
1. The upper and lower oblique fixing nails are arranged behind the lower tibia segment and the calcaneus tuberosity of the patient, and the ankle joint overstretching position is maintained through the matching of the fixing handle and the movable handle, so that the exposed target tissue can be effectively retracted, the maximum range exposure behind the talus pulley is realized, the operation visual field is not blocked, and the focus exposure difficulty is reduced.
2. The method has the advantages that the focus is deeply exposed in a mode of partial osteotomy or whole osteotomy, the ankle joint surface bone quantity defect and cartilage injury are not easy to occur, the postoperative recovery of a patient is facilitated, and the related complications of osteotomy cannot be caused.
3. The sliding step distance of the movable handle is adjusted and fixed by adopting the two nuts, so that the operation can be simplified, a special person is not required to control the spreader, repeated adjustment is not required, labor is saved, and the operation intensity is reduced.
4. The fixed handle, the movable handle and the fixed nail do not adopt a complex structure of fixed connection, the shape is simple, the structure and the manufacturing process are simplified, the disassembly and the assembly are convenient, the storage are easy, when parts are damaged, the parts can be independently replaced, and the use cost is reduced.
5. The size of the fixing handle, the support strip and the fixing nail is suitable for practical clinical application, and simultaneously accords with the characteristics of ankle joint anatomy, joint movement and biomechanics.
Drawings
FIG. 1 is a schematic view of the structure of the spreader for revealing a lesion of cartilage damage in talus bone of the present utility model;
FIG. 2 is a schematic representation of the use of the talus cartilage injury focus exposure distractor of the present utility model;
FIG. 3 is a schematic view of the structure of the fixing handle and the stay of the present utility model;
FIG. 4 is a schematic view of the structure of the movable handle of the present utility model;
FIG. 5 is a schematic view of the use of the talar cartilage injury focus revealing distractor of the present utility model on an ankle joint;
Wherein, the utility model comprises a fixed handle 1, a supporting bar 2, a movable handle 3, a sliding hole 4, an adjusting nut 5, a fixed nut 6, an upper fixing nail 7, a lower fixing nail 8, a through hole 9, a tibia 11, a calcaneus 12, a talus 13 and a fibula.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1 to 2, a spreader for exposing a lesion of cartilage damage of talus bone comprises a fixed handle, wherein a supporting strip is fixedly arranged on one side of the fixed handle, a movable handle and a locking mechanism for limiting the relative movement of the movable handle are connected to the supporting strip in a sliding manner, fixing nails are arranged at the tail ends of the fixed handle and the movable handle, the fixed handle is matched with the movable handle and the locking mechanism, and the two fixing nails are controlled to spread and fix an ankle joint.
As shown in fig. 4, the connection end of the movable handle and the support bar is provided with a sliding hole corresponding to the size of the support bar, and the support bar is inserted in the sliding hole.
As shown in fig. 3, the branch is a rack or a threaded rod. The locking mechanism comprises an adjusting nut and a fixing nut, wherein the adjusting nut is arranged on one side, close to the fixing handle, of the movable handle, the fixing nut is arranged on one side, far away from the fixing handle, of the movable handle, and the adjusting nut and the fixing nut are nuts with internal threads matched with the outer walls of the supporting strips.
In this embodiment, the fixing nail includes an upper fixing nail and a lower fixing nail, the ends of the fixing handle and the movable handle are provided with through holes, the upper fixing nail is inserted into the through hole of the fixing handle, and the lower fixing nail is inserted into the through hole of the movable handle. The fit of the fixing nails and the through holes is clearance fit. Specifically, the inner diameter of the through hole is 4.5mm, and the outer diameter of the fixing nail is 3.5mm.
The length of the fixed handle is 5cm, and the length of the branch is 12cm.
The fixed handle and the supporting strip are of an integrally formed L-shaped structure.
The length of the fixing nail is 10cm, and the tail end of the fixing nail is a pointed drill bit in a prismatic shape.
The fixed handle, the support strip, the movable handle, the fixed nail and the nut are all made of medical stainless steel materials.
The fixed handle, the support strip, the movable handle, the fixed nail and the nut can be manufactured by a 3D printing technology, and the standard tolerance accords with the IT14 level standard.
The ankle joint consists of a joint at the lower end of a tibiofibula and a joint surface (talus pulley) at the upper part of a talus, and is characterized in that the movement of the ankle joint occurs along the inner surface, the axis of the ankle joint passes through a paraosseous sinus from the midpoint of the tip of an inner ankle to the front edge of the tip of an outer ankle, forms an included angle of 68-88 degrees with the sagittal axis of a human body and forms an included angle of about 20 degrees with the coronal axis, and the movement of flexion and extension is accompanied by slight internal and external turning and internal contraction and external abduction.
The application steps of the utility model are as follows:
s1, stretching the ankle joint back, namely lifting the instep to enable the angle of the ankle joint to be smaller than 90 degrees;
S2, separating soft tissues, namely separating the incision to the rear of the ankle joint, exposing a rear joint capsule, and making a small incision of 0.5cm in the middle of the rear side of the lower section (3-6 cm from the joint surface) of the tibia to separate small blood vessels into tissues;
S3, placing a fixing nail, namely drilling an upper fixing nail from the lower back to the front and upper at the rear side of the lower section of the tibia, and drilling a lower fixing nail from the lower back to the front and upper at the first metatarsophalangeal direction of the calcaneus tuberosity towards the axial direction of the calcaneus;
S4, assembling the spreader, namely sleeving the tail end of the fixed handle on the upper fixed nail, sleeving the tail end of the movable handle on the lower fixed nail through the through hole, screwing the adjusting nut into the tail end of the supporting strip, sleeving the head end of the movable handle on the supporting strip through the sliding hole, adjusting the position of the movable handle, and screwing the fixing nut;
And S5, adjusting and fixing the stretching distance, namely gradually stretching the ankle joint when the ankle joint is in back stretching, adjusting the stretching degree of the ankle joint by screwing the adjusting nut, and finally fixing the stretching distance of the ankle joint by screwing the fixing nut (the using effect is as shown in figure 5).
In general, the utility model arranges the oblique upper and lower fixing nails at the rear of the lower section of the tibia and the calcaneum tuberosity of the patient, and the upper and lower fixing nails are spread and fixed by the cooperation of the fixing handle and the movable handle, so as to maintain the overstretching position of the ankle joint, effectively retract and expose the target tissue, realize the maximum range exposure at the rear of the talus pulley, ensure that the operation view is not blocked, simultaneously effectively reduce the size of the operation wound, increase the lighting and illumination of the operation field and reduce the exposure difficulty of the focus.
The method has the advantages that the focus depth is revealed in a mode of partial osteotomy or whole osteotomy, the ankle joint face bone quantity defect is not caused, meanwhile, cartilage is not easy to damage, the operation difficulty is reduced, related complications of osteotomy cannot be caused in the recovery process, and the postoperative recovery of a patient is facilitated.
The sliding step distance of the movable handle is adjusted by the adjusting nut, the movable range of the movable handle is limited by the fixing nut, the using method is simple and convenient, the stretching distance of the ankle joint can be accurately adjusted according to practical application, the operation in the operation process is simplified, a special person is not required to operate the spreader, repeated adjustment of the stretching distance of the ankle joint is not required, labor and time are saved, and the operation strength is reduced.
The fixing handle, the movable handle and the fixing nail are not in a complex structure with fixed connection, the fixing handle, the movable handle and the fixing nail are simple in shape, can be manufactured through existing equipment in a common workshop, simplify the structure and manufacturing process, meet production benefits, are convenient to disassemble and assemble, the fixing handle, the supporting strip, the movable handle, the fixing nail and the nut can be independently disassembled and tiled, do not occupy space, are easy to store, can be independently replaced when parts are damaged, and reduce use cost.
The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. The spreader for the cartilage injury focus of the talus is characterized by comprising a fixed handle, wherein one side of the fixed handle is fixedly provided with a supporting strip, the supporting strip is connected with a movable handle and a locking mechanism for limiting the relative movement of the movable handle in a sliding manner, the tail ends of the fixed handle and the movable handle are respectively provided with a fixed nail, the fixed handle is matched with the movable handle and the locking mechanism, and the two fixed nails are controlled to spread and fix the ankle joint.
2. The spreader for revealing cartilage damage focus of talus bone according to claim 1, wherein the connecting end of the movable handle and the branch bar is provided with a sliding hole which is matched with the size of the branch bar, and the branch bar is inserted into the sliding hole.
3. The spreader for revealing a cartilage damage focus of talus bone according to claim 1, wherein the branch is a rack or a threaded rod.
4. The device of claim 3, wherein the locking mechanism comprises an adjusting nut and a fixing nut, the adjusting nut is arranged on one side of the movable handle close to the fixing handle, the fixing nut is arranged on one side of the movable handle far away from the fixing handle, and the adjusting nut and the fixing nut are nuts with internal threads matched with the outer wall of the supporting strip.
5. The device of claim 1, wherein the pins comprise upper pins and lower pins, the ends of the fixed handle and the movable handle are provided with through holes, the upper pins are inserted into the through holes of the fixed handle, and the lower pins are inserted into the through holes of the movable handle.
6. The spreader of claim 5, wherein the pin is in clearance fit with the through hole.
7. The spreader for revealing a cartilage damage focus in talus as claimed in claim 1, wherein the length of the fixing handle is 5cm, and the length of the branch is 12cm.
8. The spreader for revealing a cartilage damage focus in a talus bone according to claim 1, wherein the fixing handle and the supporting strip are integrally formed in an L-shaped structure.
9. The spreader for revealing a cartilage damage lesion in talus according to claim 1, wherein the length of the fixing nail is 10cm, and the end of the fixing nail is a pointed drill in a prismatic shape.
10. A talus cartilage injury focus exposure spreader according to any one of claims 1-9, wherein the fixed handle, the branch bar, the movable handle, the fixed nail and the nut are all made of medical stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322787164.0U CN222075234U (en) | 2023-10-17 | 2023-10-17 | Exposure spreader for cartilage injury focus of talus bone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322787164.0U CN222075234U (en) | 2023-10-17 | 2023-10-17 | Exposure spreader for cartilage injury focus of talus bone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222075234U true CN222075234U (en) | 2024-11-29 |
Family
ID=93599675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322787164.0U Active CN222075234U (en) | 2023-10-17 | 2023-10-17 | Exposure spreader for cartilage injury focus of talus bone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222075234U (en) |
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2023
- 2023-10-17 CN CN202322787164.0U patent/CN222075234U/en active Active
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