CN209863975U

CN209863975U - Vertebral pedicle puncture needle

Info

Publication number: CN209863975U
Application number: CN201820977378.0U
Authority: CN
Inventors: 陈小龙; 崔艳丽; 朱华; 赵云昌; 尚晨光
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-25
Filing date: 2018-06-25
Publication date: 2019-12-31
Anticipated expiration: 2028-06-25

Abstract

The utility model discloses a pedicle of vertebral arch puncture needle, which comprises a puncture sleeve, a puncture needle core and a puncture probe, wherein the puncture needle core and the puncture probe penetrate through the rear end of the puncture sleeve movably; the front end of the puncture probe is provided with an oval puncture head matched with the inner diameter of the puncture sleeve, and the rear end of the puncture probe is provided with a holding part. The utility model has the advantages of simple structure, safe and simple operation.

Description

Vertebral pedicle puncture needle

Technical Field

The utility model discloses medical operation instrument especially relates to a convenient safe pedicle of vertebral arch pjncture needle of operation.

Background

In the existing medical field, various pedicle puncture needles used for percutaneous injection bone cement vertebroplasty (PVP) and percutaneous pedicle screw internal fixation (MIPPS) have the common point that the needle point of the probe is sharp, and when the sharp puncture probe is used for performing the pedicle internal puncture, the four walls of the pedicle are very easy to puncture, so that vascular nerve injury is easy to cause, and the puncture failure or various complications are caused; in addition, the existing spinal puncture needle is a slender tube body and a needle body, so that the spinal puncture needle is not convenient to hold by hand during puncture operation, the puncture operation is troublesome, and the specialty degree is high; and when the outer sleeve of the existing spinal puncture needle penetrates into the posterior cortex of the vertebral pedicle, the penetrating end is not fixed, so that the outer sleeve is easy to shake, and the difficulty of the penetration of a probe in the next step is increased.

Disclosure of Invention

The utility model aims to provide a pedicle of vertebral arch pjncture needle simple in structure, easy and simple to handle.

In order to achieve the above purpose, the utility model can adopt the following technical proposal:

the pedicle of vertebral arch puncture needle of the utility model comprises a puncture sleeve, a puncture needle core and a puncture probe which are movably penetrated from the rear end of the puncture sleeve, wherein the rear end of the puncture needle core is provided with a screwed joint which is fixedly connected with the rear end of the puncture sleeve in a screwed way, the outer side wall which is close to the rear end of the puncture sleeve is vertically and fixedly connected with a grab handle, and the front end opening of the puncture sleeve extends forwards to be provided with a sawtooth-shaped clamping part; the front end of the puncture probe is provided with an oval puncture head matched with the inner diameter of the puncture sleeve, and the rear end of the puncture probe is provided with a holding part.

And anti-slip belts are arranged on the outer walls of the grab handle and the holding part.

The puncture sleeve is an aviation aluminum pipe body, and scale marks are arranged on the outer wall of the puncture probe along the length direction.

The utility model has the advantages of simple structure, safe and simple operation. The grab handle on the puncture cannula is more in line with the force application and control of human mechanics, and meanwhile, the interference on X-ray fluoroscopy of the pedicle position in the operation is avoided, so that the fluoroscopy is more accurate and clear; the serrated clamping part at the edge of the front port of the puncture cannula can be well fixed on the cortex at the rear side of the pedicle of vertebral arch, so that a good fixing effect is achieved, the puncture cannula is prevented from shaking during puncture, the penetration difficulty of a puncture probe is greatly reduced, and the puncture precision is improved; the elliptic puncture head at the front end of the puncture probe is designed based on the theory of the pedicle screw method of the Abumi method, effectively avoids damage to the four walls of the pedicle of vertebral arch, smoothly enters the vertebral body through cancellous bone in the pedicle of vertebral arch, and avoids damage to nerve roots and dura mater; in addition, the holding part at the rear end of the puncture probe can be conveniently held by medical personnel, so that the puncture difficulty is reduced, and the pollution caused by holding the puncture probe by hands is avoided.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the structure of the piercing probe.

Detailed Description

As shown in fig. 1 and 2, the spinal needle of the present invention comprises a puncture cannula 1, a puncture needle core 2 and a puncture probe 3 which are movably inserted from the rear end of the puncture cannula, wherein the rear end of the puncture needle core 2 is provided with a screw joint 4 fixedly connected with the rear end of the puncture cannula 1 by screw connection, and the outer side wall close to the rear end of the puncture cannula 1 is vertically and fixedly connected with a grab handle 5, which is more in line with the force generation and control of human mechanics, so that medical personnel can more conveniently hold the spinal needle when performing spinal puncture; the front end of the puncture sleeve 1 extends forwards along the position to be provided with the serrated clamping part 6, the serrated clamping part 6 can increase the fixing force of the front end of the puncture sleeve 1 and the outer surface contact of the vertebral pedicle, so that the puncture sleeve 1 is well fixed on the vertebral pedicle to play a good fixing role, the puncture sleeve 1 is prevented from shaking during subsequent puncture, the penetration difficulty of the puncture probe 3 is greatly reduced, and the puncture precision is improved.

Based on the theory of the pedicle screw method of the Abumi method, the front end of the puncture probe 3 is provided with an oval puncture head 7 matched with the inner diameter of the puncture cannula 1, and the round or oval puncture head 7 can effectively prevent the puncture probe 3 penetrating into cancellous bone of the pedicle of vertebral arch from damaging the four walls of the pedicle of vertebral arch, and simultaneously can ensure that the puncture probe can smoothly enter the vertebral body through the cancellous bone to prevent nerve roots and dura mater from being damaged; the rear end of the puncture probe 3 is provided with a holding part 8, so that medical personnel can conveniently hold the puncture probe for puncturing, the puncturing difficulty is reduced, meanwhile, the needle body of the puncture probe 3 can be prevented from being held, and the polluted puncture probe 3 is prevented from entering the body of a patient.

For the stability that grips when increase medical personnel puncture operation, all be provided with the antiskid area on the outer wall of holding handle 5 and the portion 8 of holding, the frictional force of increase and hand skids when avoiding the puncture.

Generally, X-ray fluoroscopy is needed to observe the position of the puncture head 7 in real time during puncture operation, the puncture cannula 1 is an aviation aluminum tube body for further rapidly measuring the penetration length of the puncture probe 3 into the vertebral pedicle, and scale marks 9 are arranged on the outer wall of the puncture probe 3 along the length direction, so that the penetration depth can be observed in real time.

When in use, the puncture needle core 2 is firstly penetrated from the rear end of the puncture sleeve 1 and is screwed and fixed through the threaded connector 4, and the needle point at the front end of the puncture needle core 2 just extends out of the puncture sleeve 1; then the grab handle 5 is held by hand, the sleeved puncture needle is punctured through the skin of a patient, the axial direction of the puncture needle core 2 is vertical to the longitudinal axis of the vertebral column, when the needle point of the puncture needle core 2 is determined to be positioned in the vertebral pedicle through X-ray perspective, the puncture needle core 2 is pulled out, the puncture probe 3 is inserted to the vertebral pedicle along the inner cavity of the puncture sleeve 1 by slight force, and enters the vertebral body through cancellous bone; at this time, the puncture cannula 1 can be pushed into a proper depth along the puncture probe 3 to complete the vertebroplasty (PVP), or the puncture cannula 1 is withdrawn to complete the hollow pedicle screw implantation (MIPPS) operation by using the puncture probe 3.

Claims

1. The utility model provides a pedicle of vertebral arch pjncture needle, includes puncture cannula (1) to and puncture stylet (2) and puncture probe (3) that penetrate from its rear end activity, its characterized in that: the rear end of the puncture needle core (2) is provided with a threaded joint (4) which is fixedly connected with the rear end of the puncture sleeve (1) in a threaded manner, the outer side wall close to the rear end of the puncture sleeve (1) is fixedly connected with a grab handle (5) vertically, and the front port edge of the puncture sleeve (1) extends forwards to be provided with a sawtooth-shaped clamping part (6); the front end of the puncture probe (3) is provided with an oval puncture head (7) matched with the inner diameter of the puncture sleeve (1), and the rear end of the puncture probe (3) is provided with a holding part (8); anti-slip belts are arranged on the outer walls of the grab handle (5) and the hand holding part (8).

2. A pedicle needle as claimed in claim 1, wherein: the puncture cannula (1) is an aviation aluminum tube body, and scale marks (9) are arranged on the outer wall of the puncture probe (3) along the length direction.