CN211962097U

CN211962097U - Tumor sampler

Info

Publication number: CN211962097U
Application number: CN201821506698.4U
Authority: CN
Inventors: 郑小金; 文楚玲; 阮飞玲
Original assignee: Affiliated Hospital of Guangdong Medical University
Current assignee: Affiliated Hospital of Guangdong Medical University
Priority date: 2018-09-14
Filing date: 2018-09-14
Publication date: 2020-11-20
Anticipated expiration: 2028-09-14

Abstract

The utility model discloses a tumor sampler, which is applied in the field of medical appliances, the utility model connects a barb-shaped cutting edge to a piston through a connecting rod, thus realizing a step sequence and simply finishing the actions of sucking and cutting; meanwhile, the piston is provided with the tooth groove section, and the needle cylinder is provided with the stroke gear matched with the tooth groove section, so that the operation operator can finish the suction and cutting actions by holding and pushing the stroke gear with one hand. Comprehensively realizes that the operation operator can simply complete the actions of suction and cutting by only one hand in one step, so that the whole tumor sampling process is simple and convenient to operate and has high efficiency.

Description

Tumor sampler

Technical Field

The utility model belongs to the field of medical equipment, concretely relates to tumour sampler.

Background

At present, a puncture needle is mainly used as a collection tool for obtaining tumor cells and tissue specimens clinically, the puncture needle is punctured into a tumor to be cut, and then a cut sample is taken out through the puncture needle. The sample easily drops in the process of taking out, causing sampling failure.

In order to overcome the above problems, for example, patent CN206792427U discloses a tumor sampler, which is to pull a piston to generate a vacuum negative pressure to suck tumor tissue into a sampling port and then to cut the tumor tissue by controlling a cutting knife, wherein the whole sampling process needs to pull a first push-pull plate and a second push-pull plate respectively, i.e. two steps and two hands are performed to complete the sucking and cutting actions, and the operation is not simple and convenient enough, and the use efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a tumor sampler, wherein the operator can simply complete the sucking and cutting actions with one hand only by one step, so that the whole tumor sampling process is easy and convenient to operate and high in efficiency.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a tumor sampler comprises a needle head, a needle cylinder, a piston, a barb-shaped blade and a stroke gear; the needle head is in a pointed cone shape and is detachably connected with the front end of the needle cylinder; a sampling hole is formed in the side wall of the needle cylinder; the piston is movably arranged in the needle cylinder, one side of the piston, which is close to the needle head, is attached to the inner side wall of the needle cylinder, and the upper part of one side, which is far away from the needle head, is an inwards-concave tooth groove section; the stroke gear is arranged on the needle cylinder through a rotating shaft and is matched with the tooth socket section; the barb-shaped blade is connected with the front end of the piston through a connecting rod, and the outer side wall of the barb-shaped blade is contacted with the inner side wall of the needle cylinder; also comprises a grab handle which is connected with the rear end of the syringe and has a hollow structure; the minimum inner diameter D1 of the handle is larger than the maximum outer diameter D2 of the piston.

Preferably, a corrugated sealing ring is arranged between the circumferential direction of the piston and the inner side wall of the needle cylinder.

Preferably, the bottom of the needle head is detachably connected with the front end of the needle cylinder in an internal and external thread matching mode.

Preferably, the sampling holes are at least provided with two circles along the axial direction of the needle cylinder, and each circle is provided with at least two sampling holes.

Preferably, when the barb-shaped blade is positioned at the foremost end of the needle cylinder, the distance L between the barb-shaped blade and the sampling hole closest to the barb-shaped blade is not less than 10mm, and the piston is positioned at the rear ends of all the sampling holes and does not shield any sampling hole.

Preferably, the outer circumference of the grab handle is provided with an arc-shaped groove.

Preferably, a layer of non-slip mat is laid above the arc-shaped groove.

Preferably, the end part of the grab handle, which is far away from one side of the piston, is provided with an end cover.

The beneficial effects of the utility model reside in that: the utility model connects the barb-shaped cutting edge to the piston through the connecting rod, thus realizing that the suction and cutting actions can be simply and conveniently completed in one step; meanwhile, the piston is provided with the tooth groove section, and the needle cylinder is provided with the stroke gear matched with the tooth groove section, so that the operation operator can finish the suction and cutting actions by holding and pushing the stroke gear with one hand. Comprehensively realizes that the operation operator can simply complete the actions of suction and cutting by only one hand in one step, so that the whole tumor sampling process is simple and convenient to operate and has high efficiency.

Drawings

In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:

fig. 1 is a schematic view of the overall structure of the present invention.

The drawings are numbered as follows: the syringe comprises a needle head 1, a syringe 2, a piston 3, a barb-shaped blade 4, a stroke gear 5, a sampling hole 6, a tooth groove section 7, a rotating shaft 8, a connecting rod 9, a grab handle 10, a corrugated sealing ring 11 and an end cover 12.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, a tumor sampler comprises a needle 1, a syringe 2, a piston 3, a barb-shaped blade 4 and a stroke gear 5; the needle head 1 is in a sharp-cone shape and is detachably connected to the front end of the needle cylinder 2; a sampling hole 6 is formed in the side wall of the needle cylinder 2; the piston 3 can be movably arranged in the needle cylinder 2, one side of the piston 3 close to the needle head 1 is attached to the inner side wall of the needle cylinder 2, and the upper part of one side far away from the needle head 1 is an inward-concave tooth groove section 7; the stroke gear 5 is arranged on the needle cylinder 2 through a rotating shaft 8 and is matched with the tooth groove section 7; the barb-shaped blade 4 is connected with the front end of the piston 3 through a connecting rod 9, and the outer side wall of the barb-shaped blade is contacted with the inner side wall of the needle cylinder 2; also comprises a grab handle 10 which is connected with the rear end of the syringe 1 and has a hollow structure; the minimum inner diameter D1 of the grip 10 is greater than the maximum outer diameter D2 of the piston 3.

When in use, an operator holds the handle 10 with one hand, pierces the needle head 1 into the tumor to be sampled until the tumor tissue axially covers the sampling hole 6, pushes the travel gear 5 forwards to rotate around the rotating shaft 8, and enables the piston 3 to move backwards along the needle cylinder 2 by matching with the tooth socket of the tooth socket section 7 to generate vacuum negative pressure, thereby sucking a part of the tumor tissue into the sampling hole 6, since the barb-shaped blade 4 is connected to the front end of the plunger 3 through the connecting rod 9, when the plunger 3 moves toward the rear end of the cylinder 2, it simultaneously pulls the barb-shaped cutting edge 4 to move towards the rear end of the needle cylinder 2, the outer side wall of the barb-shaped cutting edge 4 is contacted with the inner side wall of the needle cylinder 2, then cutting off the tumor tissue sucked into the sampling hole 6, and finally, removing the tumor tissue in the needle cylinder 2 through the medical cotton swab and the containing vessel by detaching the needle head 1 to finish sampling. The operator can complete the sucking and cutting actions simply and conveniently by only one hand in one step, so that the whole tumor sampling process is simple and convenient to operate and high in efficiency.

Grab handle 10 is hollow structure, has alleviateed the holistic weight of tumour sampler firstly, and its minimum internal diameter D1 is greater than piston 3 external diameter D2 the most greatly simultaneously, can guarantee that piston 3 can get into the inner chamber to grab handle 10 smoothly when the backward motion, make full use of grab handle 10 hollow cavity structure, shortened the required length of cylinder 2 confession piston 3 motion in the design, make this tumour sampler more small and exquisite retrench, facilitate the use, the practicality is higher.

Furthermore, a corrugated sealing ring 11 is arranged between the circumferential direction of the piston 3 and the inner side wall of the needle cylinder 2 in the embodiment. The corrugated sealing ring 11 not only has good sealing effect, but also can avoid the hard touch contact between the piston 3 and the inner side wall of the needle cylinder 2 because of certain yielding, so that the piston 3 can move more smoothly in the needle cylinder 2.

Further, the bottom of the needle 1 and the front end of the needle cylinder 2 are detachably connected in an internal and external screw matching manner in this embodiment, which is only one of the detachable connection forms, and those skilled in the art can make corresponding modifications according to actual situations.

Further, the sampling hole 6 that this embodiment adopted has seted up two circles at least along the cylinder 2 axial, and every circle has two sampling holes 6 at least, and this design can realize once only gathering a large amount of tumor samples, synthesizes the pathological change degree of understanding different tumour depths.

Further, the barb-shaped blades 4 adopted in the present embodiment are located at the foremost end of the needle cylinder 2, and the distance L between the barb-shaped blades 4 and the sampling hole 6 closest to the barb-shaped blades is not less than 10mm, so as to ensure that the piston 3 can have a movement stroke of at least 10mm before the barb-shaped blades 4 cut the tumor tissue sucked into the sampling hole 6, so as to generate negative pressure in the needle cylinder 2 and ensure that a sufficient amount of tumor tissue is sucked; and at the moment, the piston 3 is positioned at the rear ends of all the sampling holes 6 and does not shield any sampling hole 6, so that each sampling hole 6 can effectively suck a certain amount of tumor tissues.

Further, the outer circumference of the handle 10 of the present embodiment is provided with an arc-shaped groove, which better conforms to the mechanical design of the hand, so that the operator can hold the handle 10 more stably and comfortably.

Furthermore, the arc recess top that this embodiment adopted is laid one deck slipmat (not shown in the figure), and this design can avoid the operator to operate this device for a long time after, the condition that the palm of the hand perspires and lead to skidding appears.

Further, the end of the handle 10 away from the piston is provided with an end cap 12, and the end cap 12 serves as a limit stop for the backward movement of the piston 3.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. A tumor sampler, comprising: comprises a needle head, a needle cylinder, a piston, a barb-shaped blade and a stroke gear;

the needle head is in a pointed cone shape and is detachably connected with the front end of the needle cylinder; a sampling hole is formed in the side wall of the needle cylinder; the piston is movably arranged in the needle cylinder, one side of the piston, which is close to the needle head, is attached to the inner side wall of the needle cylinder, and the upper part of one side, which is far away from the needle head, is an inwards-concave tooth groove section; the stroke gear is arranged on the needle cylinder through a rotating shaft and is matched with the tooth socket section;

the barb-shaped blade is connected with the front end of the piston through a connecting rod, and the outer side wall of the barb-shaped blade is contacted with the inner side wall of the needle cylinder;

also comprises a grab handle which is connected with the rear end of the syringe and has a hollow structure; the minimum inner diameter D1 of the handle is larger than the maximum outer diameter D2 of the piston.

2. A tumor sampler as claimed in claim 1, wherein: and a corrugated sealing ring is arranged between the circumferential direction of the piston and the inner side wall of the needle cylinder.

3. A tumor sampler as claimed in claim 1, wherein: the bottom of the needle head is detachably connected with the front end of the needle cylinder in a mode of matching the inner thread and the outer thread.

4. A tumor sampler as claimed in claim 1, wherein: the sampling hole has seted up two circles along the cylinder axial at least, and every circle has two sampling holes at least.

5. A tumor sampler as claimed in claim 1, wherein: when the barb-shaped blade is positioned at the foremost end of the needle cylinder, the distance L between the barb-shaped blade and the sampling hole closest to the barb-shaped blade is not less than 10mm, and the piston is positioned at the rear ends of all the sampling holes and does not shield any sampling hole.

6. A tumor sampler as claimed in claim 1, wherein: an arc-shaped groove is circumferentially arranged on the outer part of the grab handle.

7. A tumor sampler as claimed in claim 6, wherein: and a layer of non-slip mat is laid above the arc-shaped groove.

8. A tumor sampler as claimed in claim 1, wherein: an end cover is arranged at the end part of the grab handle, which is far away from one side of the piston.