CN114903582B - A tripod for guiding needle insertion and positioning of scaphoid fracture - Google Patents
A tripod for guiding needle insertion and positioning of scaphoid fracture Download PDFInfo
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- CN114903582B CN114903582B CN202210470125.5A CN202210470125A CN114903582B CN 114903582 B CN114903582 B CN 114903582B CN 202210470125 A CN202210470125 A CN 202210470125A CN 114903582 B CN114903582 B CN 114903582B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/10—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis
- A61B90/11—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis with guides for needles or instruments, e.g. arcuate slides or ball joints
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Abstract
本发明公开了一种舟骨骨折导向进针定位三脚支架，其特征在于，包括：支撑脚、三脚连接器、导管、导管支撑脚；所述支撑脚万向连接在三脚连接器的底部，所述导管尾端为斜口状动态连接于三脚连接的顶部，所述导管支撑脚活动套接在导管底部；所述支撑脚设有可伸缩支撑杆，顶部万向连接于三脚连接器底部，所述伸缩杆随压缩程度的增大其顶部与三脚连接器万向连接转动阻尼增大；该装置通过该三脚架可以模拟出固定舟骨导针的进针路线，不再需要像传统加压固定方式一般，先要完全暴露舟骨，在对其手术固定，对患者的整体创伤较小，便于其术后恢复；同时简化了反复的手术过程，减轻了主刀医生的工作负担，同时提升了手术的成功率。
The invention discloses a tripod for guiding and positioning needle insertion of scaphoid fracture, which is characterized by comprising: a supporting foot, a tripod connector, a catheter, and a catheter supporting foot; the supporting foot is universally connected to the bottom of the tripod connector, the tail end of the catheter is in an oblique shape and dynamically connected to the top of the tripod connector, and the catheter supporting foot is movably sleeved on the bottom of the catheter; the supporting foot is provided with a telescopic supporting rod, the top of which is universally connected to the bottom of the tripod connector, and the rotation damping of the telescopic rod universally connected to the tripod connector at the top increases with the increase of the compression degree; the device can simulate the needle insertion route for fixing the scaphoid guide needle through the tripod, and it is no longer necessary to completely expose the scaphoid first and then fix it surgically like the traditional pressurized fixation method, which causes less overall trauma to the patient and facilitates his postoperative recovery; at the same time, it simplifies the repeated surgical process, reduces the workload of the surgeon, and improves the success rate of the operation.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a navicular fracture guiding needle insertion positioning tripod.
Background
Navicular bone is a small bone of the wrist. The navicular bone is close to the radial side of the row, and is called as the navicular. But is irregular, long and narrow at the back, rough and uneven, and forms a joint with radius. When the patient falls and is injured, the palm of the patient lands, and the navicular bone is impacted by the patient and is pressed between the radius and the capitis bone, so that fracture is formed. Because the navicular bone is positioned with large shearing force and poor blood circulation, the navicular bone is difficult to heal.
The fracture of navicular bone is divided into three types according to fracture positions, namely waist fracture, proximal fracture and tuberosity fracture, local swelling and pain after injury, limited movement of wrist joint and aggravated pain, and pressing pain at the nasopharyngeal fossa and the navicular bone tuberosity. Sometimes slight fracture symptoms are not obvious, similar to wrist sprain symptoms, misdiagnosis is easy to ignore, and the X-ray in three directions of forward and lateral inclinations of the wrist joint can confirm the fracture position and direction. If the fracture is unclear, the clinical symptoms are suspected to be fracture, the fracture should be treated temporarily, and X-ray films should be reviewed after two weeks. The fracture line can be clearly recognized due to bone absorption at the fracture site. The navicular nutrient vessels mainly enter from the tuberosity and the lateral middle. The surrounding of the navicular bone is mostly cartilage surface, no periosteum is attached, the fracture can be connected by the internal porosis, the fracture is followed by injury of the nutrition blood vessel, and the proximal broken end is easy to generate aseptic necrosis due to ischemia.
At present, in clinic, the fixing treatment of the fracture of the navicular bone needs to cut the affected part of the patient, expose the navicular bone and then fix the navicular bone by screw pressurization, so that the trauma to the patient is very large, the whole operation is tedious, and the operator is extremely burdened.
Thus, there is a need in the clinic for a device for determining needle insertion direction in and out of the affected area such that there is no longer a need to expose the navicular bone.
Disclosure of Invention
In order to solve the technical problems, the invention designs the navicular fracture guiding needle-inserting positioning tripod bracket, and a guiding channel is built outside to solve the problem that the traditional navicular fracture exposure and fixation causes great damage to patients.
In order to achieve the technical effect of solving the technical problems, the invention is realized by the following technical scheme that the navicular fracture guiding needle-inserting positioning tripod bracket is characterized by comprising supporting feet, tripod connectors, a catheter and catheter supporting feet;
The support leg is connected with the bottom of the tripod connector in a universal way, the tail end of the guide pipe is dynamically connected with the top of the tripod connector in an inclined opening shape, and the guide pipe support leg is movably sleeved at the bottom of the guide pipe;
The telescopic support rod is provided with a telescopic support rod, the top of the telescopic support rod is connected with the bottom of the tripod connector in a universal mode, and the top of the telescopic support rod is connected with the tripod connector in a universal mode along with the increase of the compression degree to increase the rotation damping;
Furthermore, the locking universal joints are arranged at the top and the bottom of the tripod connector, the top locking universal joint is connected with an extender in a universal manner, the guide pipe is movably sleeved on the extender, and the supporting legs are connected to the locking universal joints of the bottom two feet in a universal manner;
Furthermore, the whole locking universal joint is in a sphere cladding mode, the outer side of the locking universal joint is in threaded connection with a locking knob, a friction layer is fixedly arranged on the plane of the inner side of the locking knob, and a rubber layer capable of compressing and deforming is arranged in the sphere inner cavity of the locking universal joint;
Further, the extender comprises a connecting rod with a sphere and a sleeve fixedly connected to the connecting rod, and a spiral limiter capable of rotationally locking the limiting guide pipe is arranged on the sleeve;
Further, the support rod of the support leg comprises a main rod and a telescopic rod which is movably telescopic in the main rod, a locker which can lock the limiting telescopic rod is fixedly arranged at the lower end of the main rod, a ball body which is in universal connection is arranged at the upper end of the main rod, a compression rod which can stretch out and draw back is arranged in the inner cavity of the fixed end of the main rod, an extrusion end is arranged at the top of the compression rod, a limiting table is arranged at the fixed top of the telescopic rod and the inner cavity of the main rod, and a ball body is arranged at the bottom of the compression rod;
Further, the bottom of the supporting rod is connected with a supporting pad in a universal way through a sphere at the bottom of the telescopic rod, and the supporting pad is provided with a limiting hole and a movable universal joint in universal connection;
Further, the locker comprises a knob which is connected with one side of the main rod in a threaded manner, and a friction block which is connected with the other side of the main rod by a back spring, wherein the end face of the knob, which is contacted with the main rod, is fixedly provided with a friction layer;
further, the whole structure of the conduit supporting foot is the same as that of the extender, and the bottom of the conduit supporting foot is connected with a supporting pad in a universal way;
The invention further aims to provide a method for using the navicular fracture guiding needle insertion positioning tripod bracket, which comprises the following steps:
1. by the prior art, such as X-ray film, the positioning positions of the two supporting feet are determined by doctors;
2. The bone of the patient is nailed into the position through the limit holes of the screw through the support pad, and the support pad is fixed, namely the point position of the support leg is fixed;
3. Fixing the palm of the affected part of the patient;
4. Under medical perspective, determining the needle inserting direction of the guide needle;
5. unscrewing all the knobs for limiting;
6. also under medical perspective, the catheter position is adjusted to ensure that the axis of the catheter coincides with the determined angle line of the needle insertion of the guide needle;
7. all the locking knobs are screwed to the movable joints, so that the movable joints are not easy to displace, and external force can be applied manually to relatively displace;
8. determining whether the axis of the catheter and the needle inserting angle line of the guide needle completely coincide;
9. after the locking knob is determined to be correct, the locking knob is screwed to manually apply pressure so as not to easily move;
10. and (3) performing guide pin implantation on the affected part of the boat fracture under the guiding action of the guide pipe.
The beneficial effects of the invention are as follows:
1. Firstly, the device component has the advantages that an external fixing and positioning device in the process of positioning the fracture of the navicular bone is adopted, the needle inserting route of the navicular bone guide needle can be simulated through the tripod, the guide needle is directly implanted outside the affected part, the navicular bone is not required to be completely exposed, the navicular bone is fixed in an operation mode, the overall wound on a patient is less, and the postoperative recovery is convenient;
2. The device comprises a supporting leg, a compression rod, a spring, a pressing rod, a control device and a medical care personnel, wherein the supporting leg is supported in a suspended mode through the spring, the compression rod can extend up and down, the rotation damping of a locking universal joint at the upper end of the supporting leg is increased when the supporting leg is compressed in the use process of the device, the elastic force of the spring is converted into the thrust of the compression rod when the upper spring is compressed when the supporting leg moves upwards, the compression rod generates friction force when the compression rod contacts the inner side wall of the locking universal joint, the higher the compression degree of the spring is, namely the higher the differential friction force is, so that the medical care personnel can control the universal joint to rotate by an angle when holding the device to adjust the angle, the control accuracy of the device is improved, and the control accuracy of the angle is improved.
3. The telescopic part of the supporting leg and the rotating part of the universal joint of the device are respectively provided with a member for increasing damping force, such as a rubber layer, a friction block and the like, so that the form transformation of the whole device is limited, and an operator can conveniently control and adjust the guiding state of the device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a navicular fracture guiding needle insertion positioning tripod;
FIG. 2 is a schematic view of another overall structure of a navicular fracture guiding needle insertion positioning tripod;
FIG. 3 is a top view of a navicular fracture guiding needle insertion positioning tripod;
FIG. 4 is a side view of a navicular fracture guiding needle insertion positioning tripod;
FIG. 5 is a schematic view of the internal structure of a supporting leg of a navicular fracture guiding needle insertion positioning tripod;
FIG. 6 is a schematic view of the internal structure of a locking gimbal of a navicular fracture guiding needle insertion positioning tripod;
FIG. 7 is a schematic view of the internal structure of a movable universal joint of a navicular fracture guiding needle insertion positioning tripod;
FIG. 8 is an enlarged fragmentary schematic view at 7 in FIG. 5;
FIG. 9 is an enlarged fragmentary schematic view at 8 in FIG. 5;
In the drawings, the list of components represented by the various numbers is as follows:
1-supporting leg, 11-supporting rod, 111-main rod, 112-telescopic rod, 1122-limiting table, 113-locker, 1131-knob, 1132-friction block, 114-pressing rod, 1141-pressing end, 115-return spring, 2-tripod connector, 21-locking universal joint, 211-locking knob, 2111-friction layer, 212-rubber layer, 23-extender, 231-cylinder, 232-spiral limiter, 3-catheter, 4-catheter supporting leg, 5-sphere, 6-supporting pad, 61-limiting hole, 62-movable universal joint.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 9, a navicular fracture guiding needle insertion positioning tripod is characterized by comprising a supporting leg 1, a tripod connector 2, a catheter 3 and a catheter supporting leg 4;
the support legs 1 are connected with the bottom of the tripod connector 2 in a universal way, the tail end of the guide pipe 3 is dynamically connected with the top of the tripod connector 2 in an inclined way, the guide pipe support legs 4 are movably sleeved at the bottom of the guide pipe 3, the two support legs 1 and the guide pipe 3 form a support whole of the tripod support, the guide pipe 3 provides a guide channel for a guide pin to enter,
The support leg 1 is provided with a telescopic support rod 11, the top of the telescopic support rod is connected with the bottom of the tripod connector 2 in a universal way, and the top of the telescopic support rod 11 is connected with the tripod connector 2 in a universal way along with the increase of the compression degree to increase the rotation damping;
the top and bottom two feet of the tripod connector 2 are respectively provided with a locking universal joint 21, the top locking universal joint 21 is connected with an extender 23 in a universal way, the guide pipe 3 is movably sleeved on the extender 23, and the supporting foot 1 is connected with the locking universal joint 21 of the bottom two feet in a universal way;
The whole locking universal joint 21 is in a sphere cladding mode, the outer side of the locking universal joint is in threaded connection with a locking knob 211, the locking knob 211 is screwed inwards through threads to press against an internal movable member of the locking universal joint, so that the locking can be locked, a friction layer 2111 is fixedly arranged on the plane of the inner side of the locking knob 211, the locking capability of the locking knob 211 is improved, a rubber layer 212 capable of compressing and deforming is arranged in the sphere inner cavity of the locking universal joint 21, and in the process of rotating an internal member of the locking universal joint, a rotary damping is provided for the locking universal joint, so that the joint state is convenient to fix;
The spreader 23 comprises a connecting rod with a sphere 5 and a sleeve 231 fixedly connected to the connecting rod, a spiral limiter 232 capable of locking and limiting the guide pipe in a rotating mode is arranged on the sleeve 231, and the spiral limiter 232 is used for compressing the guide pipe 3 in a rotating mode to fix the guide pipe 3;
The supporting rod 11 of the supporting leg 1 comprises a main rod 111 and a telescopic rod 112 which is movably telescopic in the main rod 111, wherein a locker 113 capable of locking the telescopic rod 112 is fixedly arranged at the lower end of the main rod 111, a ball 5 which is in universal connection is arranged at the upper end of the main rod 111, a pressing rod 114 which can be telescopic out to the upper end face of the top end of the main rod 111 is arranged in the inner cavity of the top end of the main rod 111, an extrusion end 1141 is arranged at the top of the pressing rod 114, a limiting table 1122 is arranged at the position between the fixed top of the telescopic rod 112 and the inner cavity of the main rod 111, and a ball 5 is arranged at the bottom of the telescopic rod 112, and a reset spring 115 is arranged between the bottom of the limiting table 1122 of the telescopic rod 112 and the bottom of the inner cavity of the main rod 111 and between the top surface of the telescopic rod 112 and the bottom of the pressing rod 114;
The bottom of the supporting rod 11 is connected with a supporting pad 6 in a universal way through a ball 5 at the bottom of a telescopic rod 112, and the supporting pad 6 is provided with a limiting hole 61 and a universal-connected movable universal joint 62, wherein the movable universal joint 62 is in a balloon cladding shape, and the inner surface of the movable universal joint is fixedly provided with a rubber layer 212;
The locker 113 comprises a knob 1131 connected to one side of the main rod 111 through threads and a friction block 1132 connected to the other side of the main rod 111 through a back reset spring 5, wherein the end face of the knob 1131, which is in contact with the main rod 111, is fixedly provided with a friction layer 1132;
the whole structure of the conduit supporting leg 4 is the same as that of the extender 23, and the bottom of the conduit supporting leg 4 is connected with the supporting pad 6 in a universal way.
Example 2
The embodiment is a specific use method and steps of a navicular fracture guiding needle insertion positioning tripod bracket:
1. by the prior art, such as X-ray film, the positioning positions of the two supporting feet are determined by doctors;
2. The bone of the patient is nailed into the position through the limit holes of the screw through the support pad, and the support pad is fixed, namely the point position of the support leg is fixed;
3. Fixing the palm of the affected part of the patient;
4. Under medical perspective, determining the needle inserting direction of the guide needle;
5. unscrewing all the knobs for limiting;
6. also under medical perspective, the catheter position is adjusted to ensure that the axis of the catheter coincides with the determined angle line of the needle insertion of the guide needle;
7. all the locking knobs are screwed to the movable joints, so that the movable joints are not easy to displace, and external force can be applied manually to relatively displace;
8. determining whether the axis of the catheter and the needle inserting angle line of the guide needle completely coincide;
9. after the locking knob is determined to be correct, the locking knob is screwed to manually apply pressure so as not to easily move;
10. and (3) performing guide pin implantation on the affected part of the boat fracture under the guiding action of the guide pipe.
In summary, in the description herein, a description of the terms "one embodiment," "example," "specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210470125.5A CN114903582B (en) | 2022-04-28 | 2022-04-28 | A tripod for guiding needle insertion and positioning of scaphoid fracture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210470125.5A CN114903582B (en) | 2022-04-28 | 2022-04-28 | A tripod for guiding needle insertion and positioning of scaphoid fracture |
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| CN114903582A CN114903582A (en) | 2022-08-16 |
| CN114903582B true CN114903582B (en) | 2025-01-03 |
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| CN117582281A (en) * | 2023-12-22 | 2024-02-23 | 北京大学人民医院 | An extracorporeal guide frame for percutaneous internal fixation around the acetabulum and reinforced intramedullary nailing |
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| CN105832379A (en) * | 2016-03-31 | 2016-08-10 | 康强军 | In-vitro-positioning drilling guide device |
| CN107569280A (en) * | 2017-10-18 | 2018-01-12 | 中南大学湘雅医院 | Nail-placing positioning device and positioning method for scaphoid operation |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2824962C (en) * | 2011-01-28 | 2018-12-11 | DePuy Synthes Products, LLC | Reamer guide systems |
| DE202011109495U1 (en) * | 2011-12-27 | 2013-01-08 | Isys Medizintechnik Gmbh | needle guide |
| AU2013243557A1 (en) * | 2012-04-04 | 2014-10-09 | Smith & Nephew, Inc. | Surgical guide with intraoperative depth feedback |
| CN204379761U (en) * | 2014-12-30 | 2015-06-10 | 河南牧业经济学院 | Acupuncture fixture |
| CN211271090U (en) * | 2019-11-15 | 2020-08-18 | 四川合顺微创科技有限公司 | An angle-adjustable external guide device for minimally invasive surgery for humeral condyle and epiphysis fractures |
| CN112220521A (en) * | 2020-09-27 | 2021-01-15 | 天衍医疗器材有限公司 | Direction adjustable acetabular drilling tool |
| CN113940883A (en) * | 2021-11-13 | 2022-01-18 | 合肥三元康泰医疗设备有限公司 | Acupuncture locator |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105832379A (en) * | 2016-03-31 | 2016-08-10 | 康强军 | In-vitro-positioning drilling guide device |
| CN107569280A (en) * | 2017-10-18 | 2018-01-12 | 中南大学湘雅医院 | Nail-placing positioning device and positioning method for scaphoid operation |
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