CN216675866U

CN216675866U - Pedicle guider with angle measuring function

Info

Publication number: CN216675866U
Application number: CN202123090618.6U
Authority: CN
Inventors: 潘伟波
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-06-07
Anticipated expiration: 2031-12-10

Abstract

The utility model discloses a pedicle guider with an angle measuring function, which comprises: a first handle and a second handle; one end of the hollow sleeve is fixed on the first handle, and the other end of the hollow sleeve is used as a marking part; a solid stylet having one end fixed to the second handle, the solid stylet being insertable through the hollow cannula; an goniometer disposed on the first handle or the second handle, comprising: a pin shaft; the middle part of the pointer is rotatably connected to the pin shaft, one end of the pointer is provided with a needle body, and the other end of the pointer is provided with a balance weight; the center of the angle dial is coincided with the axis of the pin shaft and matched with the pointer. The pedicle screw is conveniently placed through the pedicle of vertebral arch during operation, and the safety and the convenience are realized during percutaneous vertebroplasty or biopsy.

Description

Pedicle guider with angle measuring function

Technical Field

The utility model relates to the field of medical instruments, in particular to a pedicle guider with an angle auxiliary function.

Background

Both vertebroplasty and percutaneous pedicle screw fixation require accurate percutaneous puncture of the pedicle. This is the key to success or failure of the entire procedure. If the puncture angle is not right, nerve tissues in the vertebral canal can be damaged by the inward puncture angle, and blood vessels around the vertebral body can be damaged by the outward puncture angle. When the centrum is formed, the cohesion angle and the head-tail obliquity angle of the puncture needle cannot be accurately grasped, and the positive side sheet is required to be adjusted in a perspective mode for many times in the operation, so that the time is consumed, and the radiation dose of rays is increased. Once the incorrect puncture path is formed, the puncture needle slides to the original puncture channel with less resistance when readjusted. Although high-end equipment such as intraoperative navigation equipment exists at present, the cost is high, the equipment is only available in a few large medical centers, and the target part needs to be scanned before operation to acquire data for image guidance of navigation, so that the time is wasted, and the ray radiation is increased.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model aims to provide a pedicle guider with an angle measuring function so as to improve the safety and convenience in the process of clinical pedicle puncture.

According to an embodiment of the present invention, there is provided a pedicle guide having an angle measuring function, including:

a first handle and a second handle;

one end of the hollow sleeve is fixed on the first handle, and the other end of the hollow sleeve is used as a marking part;

a solid stylet having one end fixed to the second handle, the solid stylet being insertable through the hollow cannula;

an goniometer disposed on the first handle or the second handle, comprising:

a pin shaft;

the middle part of the pointer is rotatably connected to the pin shaft, one end of the pointer is provided with a needle body, and the other end of the pointer is provided with a balance weight;

the center of the angle dial is coincided with the axis of the pin shaft and matched with the pointer.

Further, the first handle and the second handle are connected through a connecting structure.

Further, the connecting structure includes an externally threaded portion and an internally threaded portion that are engageable with each other, the externally and internally threaded portions being located on the first and second handles, respectively.

Furthermore, the connecting structure comprises a clamping groove part and a clamping part which can be clamped with each other, and the clamping groove part and the clamping part are respectively positioned on the first handle and the second handle.

The technical scheme provided by the embodiment of the utility model can have the following beneficial effects:

before the art can learn reasonable puncture angle through measuring patient's CT, control puncture angle at reasonable scope through the scale reading of angular surveying ware in puncture process to the distance of needle point and mark portion and the width of pedicle of vertebral arch are compared and are controlled puncture angle on the straight position of C arm machine.

According to the embodiment, the puncture angle is controlled and controlled in a reasonable range in the percutaneous pedicle puncture process, the injury of nerves in a vertebral canal caused by the puncture of the pedicle is avoided, the puncture safety is ensured, the whole puncture process can be completed basically only according to the C-arm positive plate, the radiation hazard of rays to patients and operators is reduced, the puncture time is shortened, and the puncture is more accurate.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a schematic structural view of a pedicle guide with angulation measurement according to an exemplary embodiment.

Fig. 2 is a schematic structural view of the tape angle gauge and the hollow sleeve shown according to an exemplary embodiment.

Fig. 3 is a schematic view of a solid stylet and a connecting structure on a second handle shown in accordance with an exemplary embodiment.

Fig. 4 is a schematic diagram illustrating an intra-operative display of a needle tip to marker width according to an exemplary embodiment.

FIG. 5 is a schematic illustration showing an optimal penetration angle when the needle tip to marker width coincides with the pedicle width of the punctured vertebral body, according to an exemplary embodiment.

The reference numerals in the figures are:

1. a first handle; 2. a second handle; 3. a hollow sleeve; 4. a marking section; 5. a solid stylet; 6. an angle measurer; 61. a pin shaft; 62. a pointer; 63. a needle body; 64. balancing weight; 65. an angle dial; 7. an external threaded portion; 8. an internal thread portion; 9. a slot clamping part; 10. a buckling part.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

Referring to fig. 1 to 3, an embodiment of the present invention provides a pedicle guide with an angle measurement function, including: the needle comprises a first handle 1, a second handle 2, a hollow sleeve 3, a solid stylet 5 and an angle measurer 6, wherein one end of the hollow sleeve 3 is fixed on the first handle 1, and the other end of the hollow sleeve 3 is used as a marking part 4; one end of the solid needle core 5 is fixed on the second handle 2, and the solid needle core 5 can pass through the hollow sleeve 3; the angle measuring device 6 is disposed on the first handle 1 or the second handle 2, and the angle measuring device 6 includes: the pointer comprises a pin shaft 61, a pointer 62 and an angle dial 65, wherein the middle part of the pointer 62 is rotatably connected to the pin shaft 61, one end of the pointer 62 is provided with a needle body 63, and the other end of the pointer 62 is provided with a counterweight 64; the center of the angle dial 65 coincides with the axis of the pin 61 and is matched with the pointer 62.

Before the art can learn reasonable puncture angle through measuring patient's CT, control puncture angle at reasonable scope through the scale reading of angular surveying ware 6 in the puncture process to compare through the straight position needle point (being the tip of solid nook closing member 5) of C arm machine and the width of mark portion 4 and pedicle of vertebral arch and control puncture angle. The angle of puncture is controlled and controlled in a reasonable range in the process of percutaneous pedicle puncture, so that the injury of nerves in a vertebral canal caused by the puncture of the pedicle is avoided, the puncture safety is ensured, the whole puncture process can be completed basically only according to the C-arm positive plate, the radiation hazard of rays to patients and operators is reduced, the puncture time is shortened, and the puncture is more accurate.

In one embodiment, the first handle 1 and the second handle 2 are connected by a connecting structure. Two connection structures are given below.

The first method is as follows: the connecting structure comprises an external thread part 7 and an internal thread part 8 which can be meshed with each other, the external thread part 7 and the internal thread part 8 are respectively positioned on the first handle 1 and the second handle 2, and the first handle 1 and the second handle 2 are connected through threads.

The second method is as follows: the connecting structure comprises a clamping groove portion 9 and a clamping portion 10 which can be clamped with each other, the clamping groove portion 9 and the clamping portion 10 are respectively located on the first handle 1 and the second handle 2, the clamping groove portion 9 can be a clamping groove arranged on the first handle 1, the clamping portion 10 can be a clamping buckle arranged on the second handle 2, and the clamping buckle is clamped in the clamping groove, so that the first handle 1 and the second handle 2 are connected.

The first handle 1 and the second handle 2 are connected by a connecting structure, and one of the connecting methods may be selected to be connected, or both of the connecting methods may be provided.

The using method of the utility model is as follows:

the reasonable puncture angle can be known by measuring the CT of a patient before an operation, the puncture angle is controlled in a reasonable range by the scale reading of the angle measurer 6 in the puncture process, and the puncture angle is controlled by monitoring the relation between the distance between the needle point and the marking part 4 and the width of the pedicle of vertebral arch through the C-arm machine righting sheet.

As shown in fig. 4 and 5, on the vertebral body orthotopic plate, when the pedicle of vertebral arch guide reaches the puncture point, the angle of the puncture needle is adjusted, so that the distance L between the needle point on the screen of the C-arm machine and the marking part 4 and the width L' of the pedicle of vertebral arch are equal, the puncture angle is reasonable, and the puncture is performed at the angle. If less than the pedicle width indicates too small a penetration angle, and if greater than the penetration angle indicates too large a penetration angle, i.e., too cohesive, there is a risk of entering the spinal canal. The correct angle is maintained, the needle is continuously inserted, and the position of the needle tip is monitored by the C-arm machine. When the needle point reaches the inner side edge of the vertebral pedicle, the lateral slice is photographed, and at the moment, the needle point enters the vertebral body to indicate that the puncture is successful.

The vertebroplasty operation and the percutaneous pedicle screw fixation both need to accurately puncture through the pedicle of vertebral arch, and once the vertebral arch deviates out, the vertebral arch can damage the surrounding important blood vessels and nerves, thereby causing serious injury to patients. The puncture needle used clinically at present needs an operator to grasp the puncture angle according to experience and feeling, and has poor reliability, so that the puncture angle and the puncture path need to be controlled by repeating the C-arm fluoroscopy of the right side position for many times so as to ensure the safety of the operation. The angle measurer 6 and the marking part 4 on the puncture needle are added to help the operator judge the puncture angle more accurately and control the puncture angle and path more accurately, so that the safety and convenience of the operation are improved, the number of times of perspective in the operation is reduced, the ray radiation of the patient and the operator is reduced, and the operation speed is improved.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. A pedicle guide with an angle measuring function, comprising:

a first handle and a second handle;

an goniometer disposed on the first handle or the second handle, comprising:

a pin shaft;

the middle part of the pointer is rotationally connected to the pin shaft, one end of the pointer is provided with a needle body, and the other end of the pointer is provided with a balance weight;

2. The pedicle guide having an angulation measurement function according to claim 1, wherein the first handle and the second handle are connected by a connection structure.

3. A pedicle guide as claimed in claim 2, wherein the connecting structure comprises external and internal screw thread portions that are engageable, the portions being located on the first and second handles respectively.

4. The pedicle guide having an angle measuring function according to claim 2, wherein the connecting structure comprises a slot portion and a buckle portion, which can be engaged with each other, and the slot portion and the buckle portion are respectively located on the first handle and the second handle.