CN218528788U - Lung biopsy puncture needle with good sealing performance - Google Patents
Lung biopsy puncture needle with good sealing performance Download PDFInfo
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- CN218528788U CN218528788U CN202222066366.1U CN202222066366U CN218528788U CN 218528788 U CN218528788 U CN 218528788U CN 202222066366 U CN202222066366 U CN 202222066366U CN 218528788 U CN218528788 U CN 218528788U
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Abstract
The application discloses lung biopsy pjncture needle that leakproofness is good belongs to aspiration biopsy technical field. The needle cylinder is characterized by mainly comprising a needle cylinder, a push rod, an outer puncture needle, an inner biopsy needle and a sealing membrane, wherein the push rod is positioned inside the needle cylinder, the outer puncture needle is positioned at the lower end of the needle cylinder, the inner biopsy needle is positioned at the lower end of the push rod, the sealing membrane is positioned inside the needle cylinder, at least three clamping block grooves are formed in the inner wall of the needle cylinder, clamping blocks are arranged in the clamping block grooves, the clamping blocks can stretch in the clamping block grooves, and positioning grooves corresponding to the clamping block grooves are formed in the side wall of the push rod. The lung biopsy puncture needle with good sealing performance achieves the effect of protecting the sealing membrane and further ensuring the sealing performance.
Description
Technical Field
The application relates to the technical field of puncture biopsy, in particular to a lung biopsy puncture needle with good sealing performance.
Background
In medical treatment, in the process of further confirming the cause of a disease in a human body or other animals, it is common to perform a corresponding sampling operation through a biopsy needle, and generally, an operation of performing a puncture operation on the surface of a living body through an external puncture needle and then performing a sampling operation on the lesion position in the living body through an internal biopsy needle is performed. However, pneumothorax and embolism are very easy to occur during the preoperative biopsy sampling process of the lung of a human body; the main reason is that after the outer puncture needle is inserted into a human body, a channel communicated with the outside air is established, and when the inner biopsy needle is further operated, the outside air easily enters the human body from the channel due to a gap between the inner biopsy needle and the outer puncture needle, so that the lung of a patient is subjected to embolism, and the normal treatment of the patient is affected inappropriately.
The existing solution is to arrange an elastic sealing film on the upper end of the outer puncture needle, so that the inner biopsy needle enters the outer puncture needle after penetrating the sealing film, the sealing film is attached to the inner biopsy needle, and a gap between the inner biopsy needle and the outer puncture needle is isolated from the outside air, but the method still can cause the condition of pulmonary embolism.
There is therefore a need to provide a pulmonary biopsy needle with good sealing properties to solve the above problems.
It is noted that the above information disclosed in this background section is only for background purposes in understanding the inventive concept and, therefore, it may contain information that does not constitute prior art.
Disclosure of Invention
The inventor finds out through research that: after the sealing membrane is used, the biopsy inner needle can vibrate due to the shaking of the hand of a user or the unstable operation of the mechanical arm and other problems in the inserting process of the biopsy inner needle, the biopsy inner needle can easily cut the sealing membrane, a gap is generated, and the gap between the biopsy inner needle and the puncture outer needle is communicated with the outside air again.
Based on the above problems in the prior art, the embodiments of the present application are directed to: the lung biopsy puncture needle with good sealing performance is provided, and the effect of protecting the sealing membrane and further ensuring the sealing performance is achieved.
The technical scheme adopted by the application for solving the technical problem is as follows: a lung biopsy puncture needle with good sealing performance comprises a needle cylinder, a push rod positioned in the needle cylinder, an outer puncture needle positioned at the lower end of the needle cylinder, an inner biopsy needle positioned at the lower end of the push rod and a sealing membrane positioned in the needle cylinder;
the inner wall of the needle cylinder is provided with at least three clamping block grooves, clamping blocks are arranged in the clamping block grooves, the clamping blocks can stretch in the clamping block grooves, and the side wall of the push rod is provided with a positioning groove corresponding to the clamping block grooves.
Further, the cylinder includes cylindric barrel and is located the cylinder seat of barrel lower extreme, cylinder seat inner wall upper end is formed with sealed membrane groove, the seal membrane edge is provided with the sealing ring corresponding with sealed membrane groove, the sealing ring is made by rubber.
Furthermore, the side wall of the sealing film groove is provided with internal threads, and the lower end of the barrel is provided with external threads corresponding to the internal threads on the side wall of the sealing film groove.
Further, an outer needle tube is arranged at the lower end of the barrel seat, the upper end of the outer needle tube is communicated with the inside of the barrel seat, and an outer needle sleeve corresponding to the outer needle tube is fixed at the top end of the outer puncture needle.
Furthermore, the fixture block grooves are formed in the inner wall of the barrel, a plurality of roller grooves are formed in one side, facing the center of the barrel, of the fixture block, and rollers are arranged in the roller grooves.
Further, keep away from the barrel center fixture block one side all rotates and is connected with at least one threaded rod, threaded rod one end runs through fixture block tank bottom surface and barrel and extends to the barrel outside, and the end is fixed to be provided with rotatory handle, threaded rod and barrel threaded connection.
Further, an inner needle column is arranged at the lower end of the push rod, and an inner needle sleeve corresponding to the inner needle column is arranged at the top end of the biopsy inner needle.
Furthermore, a biopsy hole is formed in the push rod, and the upper end of the push rod and the lower end of the inner needle column are communicated through the biopsy hole.
The beneficial effect of this application is: the application provides a pair of lung biopsy pjncture needle that leakproofness is good, through after the push rod inserts the cylinder, the fixture block stretches out the fixture block groove, blocks into and the centre gripping constant head tank, reaches the effect fixed to the push rod centre gripping, can avoid the push rod unstable of operation when inserting, leads to the push rod to drive the interior needle vibration of biopsy to lead to the sealing membrane to be scratched and produce the space.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention. In the drawings:
FIG. 1 is a generally schematic view of a pulmonary biopsy needle of the present application with good sealing properties;
FIG. 2 is a schematic drawing in section of a portion of the lung biopsy needle of FIG. 1;
FIG. 3 is an exploded view of the syringe of FIG. 2;
FIG. 4 is an exploded view of the push rod of FIG. 2;
wherein, in the figures, the respective reference numerals:
1. a needle cylinder; 11. a barrel; 111. a block slot; 112. a clamping block; 113. a roller groove; 114. a roller; 115. a threaded rod; 116. rotating the handle; 117. a support plate; 12. a cartridge holder; 121. an outer needle tube; 122. sealing the film groove;
2. a push rod; 21. positioning a groove; 22. pushing the plate; 23. an inner needle column; 24. biopsy holes;
3. puncturing an outer needle; 31. an outer needle sleeve;
4. an inner biopsy needle; 41. an inner needle sleeve;
5. a sealing film; 51. and (4) a sealing ring.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
As shown in figures 1-4, the present application provides a lung biopsy puncture needle with good sealing performance, which comprises a needle cylinder 1, a push rod 2 positioned inside the needle cylinder 1, an outer puncture needle 3 positioned at the lower end of the needle cylinder 1, an inner biopsy needle 4 positioned at the lower end of the push rod 2, and a sealing membrane 5 positioned inside the needle cylinder 1.
The cylinder 1 includes a cylindrical body 11 and a cylinder holder 12 located at a lower end of the cylindrical body 11.
The cylinder seat 12 is hollow and has an upward opening, an outer needle tube 121 is arranged at the lower end of the cylinder seat 12, the upper end of the outer needle tube 121 is communicated with the inside of the cylinder seat 12, a sealing film groove 122 is formed at the upper end of the inner wall of the cylinder seat 12, and an internal thread is arranged on the side wall of the sealing film groove 122.
The lower end of the barrel 11 is provided with external threads corresponding to the internal threads of the side wall of the sealing film groove 122, the inner wall of the barrel 11 is provided with at least three clamping block grooves 111, in the embodiment, the clamping block grooves 111 are four, clamping blocks 112 are arranged in the clamping block grooves 111, a plurality of roller grooves 113 are arranged on one side of the clamping blocks 112 facing the center of the barrel 11, rollers 114 are arranged in the roller grooves 113, at least one threaded rod 115 is connected to one side of the clamping blocks 112 far away from the center of the barrel 11 in a rotating mode, in the embodiment, two threaded rods 115 are connected to one side of each clamping block 112 in a rotating mode, one end of each threaded rod 115 penetrates through the bottom surface of the clamping block groove 111 and the barrel 11 and extends to the outer side of the barrel 11, a rotating handle 116 is fixedly arranged at the end of the threaded rod 115 and the barrel 11 in a threaded connection mode, and a supporting plate 117 is arranged at the top end of the barrel 11.
The sealing film 5 is provided at its edge with a sealing ring 51 corresponding to the sealing film groove 122, the sealing ring 51 being made of rubber.
An outer needle hub 31 corresponding to the outer needle tube 121 is fixed to the tip of the outer puncture needle 3.
2 lateral walls of push rod cooperate with barrel 11, 2 lateral walls of push rod are provided with the constant head tank 21 that corresponds with fixture groove 111 position, and the constant head tank 21 lower extreme communicates to 2 lower extremes of push rod, and 2 tops of push rod are provided with push pedal 22, and 2 lower extremes of push rod are provided with interior needle posts 23, are provided with biopsy hole 24 in the push rod 2, and biopsy hole 24 communicates 2 upper ends of push rod and interior needle posts 23 lower extreme.
The biopsy inner needle 4 is provided at its tip with an inner needle sleeve 41 corresponding to the inner needle cylinder 23.
It will be appreciated that the push rod 2 includes both types of biopsy holes 24 (not shown) and biopsy holes 24, and that the type of biopsy holes 24 may be selected by the user according to specific needs, and the support plate 117 and the push plate 22 may be configured to facilitate the user's operation, or the support plate 117 and the push plate 22 may be configured to be mechanically removed (not shown) to avoid interference with the mechanical operation.
In this embodiment, in the initial state, the barrel 11 and the barrel base 12 are in a separated state, first, the sealing film 5 is put into the sealing film groove 122, the sealing film 5 is supported by the sealing ring 51 and the sealing film groove 122 in a matched manner, so that the sealing film 5 is positioned at the bottom of the sealing film groove 122, then the barrel 11 is matched with the external thread at the lower end of the barrel 11 by the internal thread of the side wall of the sealing film groove 122, the lower end of the barrel 11 is screwed into the sealing film groove 122 in a fixed manner, in the screwing process, the lower end of the barrel 11 is finally matched with the bottom surface of the sealing film groove 122, the sealing ring 51 is pressed, on one hand, the sealing ring 51 is clamped by the lower end of the barrel 11 and the bottom surface of the sealing film groove 122, so as to fixedly support the sealing film 5, on the other hand, because the sealing ring 51 is made of rubber, the joint of the barrel 11 and the sealing film groove 122 can be sealed, and air leakage at the joint can be avoided.
Then, a proper push rod 2 is selected, and is sleeved on the outer needle tube 121 through the outer needle sleeve 31, the needle tube 1 and the puncture outer needle 3 are installed and fixed, and is sleeved on the inner needle post 23 through the inner needle sleeve 41, and the push rod 2 and the biopsy inner needle 4 are installed and fixed.
Since the threaded rod 115 is connected to the barrel 11, and one end of the threaded rod 115 is rotatably connected to one side of the latch 112, the threaded rod 115 can drive the latch 112 to move in the latch slot 111 when rotating, and therefore, the threaded rod 115 is rotated by the rotating handle 116 to drive the latch 112 to be completely retracted into the latch slot 111. Then with push rod 2 inside as shown in fig. 2, insert syringe 1 to with fixture block groove 111 and constant head tank 21 position correspondence, when letting syringe 1 insert, inside fixture block 112 got into constant head tank 21, simultaneously because 2 lateral walls of push rod cooperate with barrel 11, play the effect of preliminary alignment, ensure that push rod 2 if continue downstream, can drive the interior needle of biopsy 4 insert puncture outer needle 3 inside.
When the lower end of the push rod 2 enters the barrel 11, the threaded rod 115 is rotated by the rotating handle 116 to drive the latch 112 to extend out of the latch slot 111, and further to be latched into the positioning slot 21, as shown in fig. 2. In order to guarantee accurate and stable location, need rotate each threaded rod 115 less number of turns at every turn, until the resistance of rotatory threaded rod 115 is great, fixture block 112 just drives roller 114 this moment, inside through centre gripping constant head tank 21, reach the fixed effect of push rod 2 centre gripping, because the roll of roller 114 self, let push rod 2 not have too big resistance, can continue to insert syringe 1, after driving biopsy inner needle 4 and pierce seal membrane 5, insert outer needle 3 of puncture, accomplish the sample, utilize seal membrane 5 to be pierced the back, still can laminate biopsy inner needle 4, avoid the clearance between biopsy inner needle 4 and the outer needle 3 of puncture to make outside air get into the human body, lead to patient's lung embolism to appear. The roller 114 clamps and fixes the push rod 2, so that the situation that the push rod 2 is unstable in operation when being inserted, the push rod 2 drives the biopsy inner needle 4 to vibrate, and the sealing membrane 5 is scratched to generate a gap can be avoided.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a lung biopsy pjncture needle that leakproofness is good which characterized in that: comprises a needle cylinder, a push rod positioned in the needle cylinder, an outer puncture needle positioned at the lower end of the needle cylinder, an inner biopsy needle positioned at the lower end of the push rod and a sealing membrane positioned in the needle cylinder;
the inner wall of the needle cylinder is provided with at least three clamping block grooves, clamping blocks are arranged in the clamping block grooves, the clamping blocks can stretch in the clamping block grooves, and the side wall of the push rod is provided with a positioning groove corresponding to the clamping block grooves.
2. The pulmonary biopsy needle of claim 1, further comprising: the needle cylinder comprises a cylindrical cylinder body and a cylinder seat positioned at the lower end of the cylinder body, a sealing film groove is formed at the upper end of the inner wall of the cylinder seat, a sealing ring corresponding to the sealing film groove is arranged at the edge of the sealing film, and the sealing ring is made of rubber.
3. The pulmonary biopsy needle of claim 2, further comprising: the side wall of the sealing film groove is provided with internal threads, and the lower end of the barrel is provided with external threads corresponding to the internal threads on the side wall of the sealing film groove.
4. The pulmonary biopsy needle of claim 2, further comprising: the outer needle tube is arranged at the lower end of the barrel seat, the upper end of the outer needle tube is communicated with the inside of the barrel seat, and an outer needle sleeve corresponding to the outer needle tube is fixed at the top end of the outer puncture needle.
5. The pulmonary biopsy needle of claim 2, further comprising: the fixture block groove is positioned on the inner wall of the cylinder body, one side of the fixture block, which faces the center of the cylinder body, is provided with a plurality of roller grooves, and rollers are arranged in the roller grooves.
6. The pulmonary biopsy needle of claim 5, further comprising: keep away from the barrel center fixture block one side all rotates and is connected with at least one threaded rod, threaded rod one end runs through fixture block tank bottom surface and barrel and extends to the barrel outside, and this end is fixed and is provided with rotatory handle, threaded rod and barrel threaded connection.
7. The pulmonary biopsy needle of claim 1, further comprising: the lower end of the push rod is provided with an inner needle column, and the top end of the biopsy inner needle is provided with an inner needle sleeve corresponding to the inner needle column.
8. The pulmonary biopsy needle of claim 7, further comprising: a biopsy hole is formed in the push rod and communicates the upper end of the push rod with the lower end of the inner needle column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222066366.1U CN218528788U (en) | 2022-08-08 | 2022-08-08 | Lung biopsy puncture needle with good sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222066366.1U CN218528788U (en) | 2022-08-08 | 2022-08-08 | Lung biopsy puncture needle with good sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218528788U true CN218528788U (en) | 2023-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222066366.1U Active CN218528788U (en) | 2022-08-08 | 2022-08-08 | Lung biopsy puncture needle with good sealing performance |
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| Country | Link |
|---|---|
| CN (1) | CN218528788U (en) |
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2022
- 2022-08-08 CN CN202222066366.1U patent/CN218528788U/en active Active
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