CN214761219U - Dual-purpose needle for marrow puncture and biopsy - Google Patents
Dual-purpose needle for marrow puncture and biopsy Download PDFInfo
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- CN214761219U CN214761219U CN202023121328.9U CN202023121328U CN214761219U CN 214761219 U CN214761219 U CN 214761219U CN 202023121328 U CN202023121328 U CN 202023121328U CN 214761219 U CN214761219 U CN 214761219U
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- biopsy needle
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Abstract
The utility model discloses a bone marrow puncture and biopsy dual-purpose needle, which is characterized in that the needle comprises a puncture outer needle, a biopsy needle core and an inner core, wherein the puncture outer needle and the biopsy needle core are both hollow cavity structures with two communicated ends, the puncture outer needle is sleeved outside the biopsy needle core, the biopsy needle core is sleeved outside the inner core, the length of the puncture outer needle is less than that of the biopsy needle core, and the length of the biopsy needle core is less than that of the inner core; one end of the inner core is provided with a tip part for puncture; the biopsy needle core is provided with an adjusting structure for adjusting the position of the outer puncture needle on the biopsy needle core, one end of the biopsy needle core is provided with at least two sampling groove surfaces, the two adjacent sampling groove surfaces are separated by a spacing groove, and the outer side of each sampling groove surface is provided with a compression structure for reducing or closing the spacing groove. The utility model has the advantages of reasonable design, effectively reduce the wound damage, prevent effectively that the biopsy sample from breaking away from the biopsy needle core, improve the success rate of biopsy sample once.
Description
Technical Field
The utility model relates to a dual-purpose needle for marrow puncture and biopsy, which belongs to the technical field of medical instruments.
Background
Bone marrow puncture (bone marrow aspiration) is a common diagnostic operation technology for collecting bone marrow fluid, the examination content of the bone marrow aspiration comprises cytology, protozoa, bacteriology and other aspects, and the bone marrow aspiration is suitable for diagnosis, differential diagnosis and treatment follow-up of various blood diseases; the diagnosis and differential diagnosis of the increment or decrement of the quantity of red blood cells, white blood cells and platelets and the abnormal morphology and the fever of unknown cause. After bone marrow tissue or bone marrow liquid is collected, the bone marrow tissue or bone marrow liquid can be used as pathological bone marrow slices, bone marrow culture, bone marrow smears for finding out malignant tumor cells and the like. The existing bone marrow biopsy puncture needle generally adopts a puncture outer needle and a biopsy needle core, and because the existing structure generally adopts an opening with the head end communicated with the hollow cavity, the biopsy sample is separated in the taking-out process of the biopsy needle core, so that the puncture failure is caused.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: how to avoid the detachment of the biopsy sample during the biopsy needle core extraction process of the bone marrow biopsy puncture needle.
In order to solve the technical problem, the technical scheme of the utility model is to provide a bone marrow puncture and biopsy dual-purpose needle, which is characterized in that the needle comprises a puncture outer needle, a biopsy needle core and an inner core, wherein the puncture outer needle and the biopsy needle core are hollow cavity structures with two communicated ends, the puncture outer needle is sleeved outside the biopsy needle core, the biopsy needle core is sleeved outside the inner core, the length of the puncture outer needle is smaller than that of the biopsy needle core, and the length of the biopsy needle core is smaller than that of the inner core; one end of the inner core is provided with a tip part for puncture; the biopsy needle core is provided with an adjusting structure for adjusting the position of the outer puncture needle on the biopsy needle core, one end of the biopsy needle core is provided with at least two sampling groove surfaces, the two adjacent sampling groove surfaces are separated by a spacing groove, and the outer side of each sampling groove surface is provided with a compression structure for reducing or closing the spacing groove.
Preferably, the puncture outer needle comprises an upper section and a lower section, the adjusting structure is arranged on the upper section, and the lower section consists of a sampling groove surface and a spacing groove; the outer diameter of the upper section is smaller than the inner diameter of the outer puncture needle, and when the distance between the sampling groove surfaces and the spacing groove is the largest, the outer diameter of the lower section is larger than the smallest inner diameter of the outer puncture needle; when the distance of the spacing grooves between the sampling groove surfaces is minimum, the outer diameter of the lower section is smaller than the minimum inner diameter of the puncture outer needle; a compression structure is formed between the outer diameter of the lower section and the minimum inner diameter of the puncture outer needle.
Preferably, the puncture outer needle further comprises an arc transition section, and the upper section and the lower section are in transition connection through the arc transition section.
Preferably, one end of the puncture outer needle close to the sampling groove surface is provided with a circular cutting edge, and the inner diameter of the circular cutting edge is smaller than the inner diameter of other positions on the puncture outer needle; when the distance between the sampling groove surfaces and the spacing groove is the largest, the outer diameter of the lower section is larger than the inner diameter of the circular cutting edge; when the distance of the spacing grooves between the sampling groove surfaces is minimum, the outer diameter of the lower section is smaller than the inner diameter of the circular cutting edge; a compression structure is formed between the outer diameter of the lower section and the inner diameter of the circular cutting edge.
Preferably, one end of the puncture outer needle, which is far away from the sampling groove surface, is provided with a handheld sleeve; the outer side wall surface of the puncture outer needle is axially provided with a pressure relief groove.
Preferably, the adjusting structure comprises a handheld handle, a first thread section and a second thread section, the first thread section and the second thread section are both arranged on the outer wall of the biopsy needle core, the handheld handle is of a hollow structure and is sleeved on the biopsy needle core, and inner threads matched with the first thread section and the second thread section are arranged on the inner wall of the handheld handle.
Preferably, the distance between one end of the biopsy needle core close to the sampling groove surface and the second thread section is not more than the length of the outer puncture needle; the distance between one end of the biopsy needle core close to the sampling groove surface and the first thread section is larger than the length of the puncture outer needle.
Preferably, the other end of the inner core is provided with a limiting sleeve, a third thread section is arranged on the inner core close to the limiting sleeve, and an internal thread which is connected with the third thread section on the inner core in a matching manner is arranged on the inner wall of one end of the biopsy needle core.
Preferably, the hollow cavity structures on the outer puncture needle and the biopsy needle core are both cavities with circular sections; the cross sections of the biopsy needle core and the outer wall of the inner core are both circular structures.
Preferably, the outer surface of the biopsy needle core is provided with scale marks.
Compared with the prior art, the utility model has the advantages of reasonable design, effectively reduce the wound damage. The utility model discloses a space groove between the sample groove face of biopsy nook closing member tip and the sample groove face combines the cavity size of the outer needle of puncture for the biopsy nook closing member is when getting into the cavity of the outer needle of puncture, and the space groove reduces between the sample groove face, makes the inside cavity compression of biopsy nook closing member, prevents effectively that the biopsy sample from breaking away from the biopsy nook closing member, improves the success rate of biopsy sample once.
Drawings
FIG. 1 is a schematic view of a dual-purpose needle for bone marrow aspiration and biopsy;
fig. 2 is a schematic view of the arrangement structure of the pressure relief groove.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Example 1
The utility model provides a dual-purpose needle of marrow puncture biopsy, as shown in figure 1, figure 2, it includes puncture outer needle 1, biopsy needle core 2 and inner core 5, puncture outer needle 1 and biopsy needle core 2 all are the communicating cavity structures of cavity form in both ends, and biopsy needle core 2 covers in the outside of inner core 5, and the length of puncture outer needle 1 is less than the length of biopsy needle core 2, and the length of biopsy needle core 2 is less than the length of inner core 5. The cavity cross-section of outer needle 1 of puncture is circular form, inner core 5 fills with the cavity adaptation of biopsy needle core 2, biopsy needle core 2 is circular upper segment 42 and the cross-section be with the circular lower section 43 of the cross-section adaptation of outer needle 1 of puncture by the cross-section and constitutes, the circular cross-section of upper segment 42 is less than the circular cross-section of lower section 43, upper segment 42 passes through arc transition section 44 with lower section 43 and is connected, lower section 43 has seted up two spacer grooves and has extended to upper segment 42 for the wall separation of lower section 43 is two sample groove face 41. The outer diameter of the upper section 42 is smaller than the inner diameter of the puncture outer needle 1, and when the distance of the spacing grooves between the sampling groove surfaces 41 is the largest, the outer diameter of the lower section 43 is larger than the smallest inner diameter of the puncture outer needle 1; when the distance between the sampling groove surfaces 41 is the smallest, the outer diameter of the lower section 43 is smaller than the smallest inner diameter of the outer piercing needle 1.
The first thread section 61 and the second thread section 62 are both arranged on the outer wall of the biopsy needle core 2, the handheld handle 23 is of a hollow structure, the handheld handle 23 is sleeved on the biopsy needle core 2, and the inner wall of the handheld handle 23 is provided with inner threads matched with the first thread section 61 and the second thread section 62. The distance between one end of the biopsy needle core 2 close to the sampling groove surface 41 and the second thread section 62 is not more than the length of the outer puncture needle 1; the distance between one end of the biopsy needle core 2 close to the sampling groove surface 41 and the first thread section 61 is larger than the length of the puncture outer needle 1. The first thread segment 61 is provided on an end of the biopsy needle core 2 remote from the sampling groove surface 41.
The inner core 5 is of a solid structure. One end of the inner core 5 is provided with a sharp part for puncture, the other end of the inner core 5 is provided with a limit sleeve 64, a third thread section 63 is arranged on the inner core 5 close to the limit sleeve 64, and an inner thread which is connected with the third thread section 63 on the inner core 5 in a matching way is arranged on the inner wall of one end of the biopsy needle core 2.
The end of the puncture outer needle 1 far away from the sampling groove surface 41 is provided with a handheld sleeve 13. The outer side wall surface of the puncture outer needle 1 is axially provided with a pressure relief groove 12, the wall surface touches blood vessels in the puncture process to cause thrombus, when a large amount of blood overflows from the pressure relief groove 12 and is convenient to take measures to treat, the plane 14 is used for placing a thumb and is convenient to locate, the head end of the biopsy needle core 2 is provided with a handheld handle 23, the handheld handle 23 is in a strip shape, two sides of the end surface of the handheld handle 23 are provided with locating holes 24, in the holding state, a forefinger can stretch into the locating holes 24 to keep holding stability and is not easy to fall off, the handheld handle 23 is arranged on the biopsy needle core 2 in a sliding manner, the biopsy needle core 2 is provided with a first section of thread 61 and a second section of thread 62, the first section of thread 61 and the second section of thread 62 are matched with the threads of the handheld handle 23, the first section of thread 61 is arranged at the head end of the handheld handle 23, in the state that the end part of the puncture outer needle 1 is matched with the end part of the biopsy needle core 2, a second length of thread 62 is provided adjacent the hand sleeve 13.
The head end of the inner core 5 is provided with a limit sleeve 64, the head of the inner core 5 is provided with a third section of screw thread 63 at a position close to the limit sleeve 64, and the third section of screw thread 63 is matched with the head end of the hollow cavity of the biopsy needle core 2. In the process of the puncture, handheld handle 23 sets up in second section screw thread 62 position, make sample groove face 41 and circle cut edge 11 adaptation, make to carry on spacingly to biopsy needle core 2, protect biopsy needle core 2, when reaching the sample position, then rotate inner core 5 and take out, break away from second section screw thread 62 position with handheld handle 23, with first section screw thread 61 adaptation, the biopsy needle core 2 of being convenient for stretches into the sample, the surface of biopsy needle core 2 is provided with scale mark 3, be convenient for master the puncture and stretch into the distance, find the suitable position of focus and carry out the biopsy sample. The graduation marks 3 are provided on a smooth straight section of the biopsy core 2 between the first thread 61 and the second thread 62. In this embodiment, the scale marks 3 are embossed scale marks.
The dual-purpose needle of bone marrow aspiration biopsy that this embodiment relates to adopts the point portion of inner core 5 to puncture, and biopsy needle core 2 cover is established in the cavity of outer needle 1 of puncture, and biopsy needle core 2 adopts inner core 5 to fill the cavity. Before the puncture outer needle 1 reaches the sampling position, the outer side wall of the sampling groove surface 41 at the bottom end of the biopsy needle core 2 is attached to the inner wall surface of the puncture outer needle 1, the lower end of the puncture outer needle 1 is flush with the lower end of the biopsy needle core 2, and the tip part of the inner core 5 is positioned at the lower end of the biopsy needle core 2 and is exposed out of the biopsy needle core 2; when the puncture outer needle 1 reaches the sampling position, the inner core 5 is drawn out from the biopsy needle core 2 (i.e. the inner core 5 is drawn out from the biopsy needle core 2), the puncture outer needle 1 is not moved, the biopsy needle core 2 continuously extends out from the puncture outer needle 1 to the bone cavity (i.e. the lower end of the puncture outer needle 1 is higher than the lower end of the biopsy needle core 2), the distance of the spacing groove between the sampling groove surfaces 41 on the biopsy needle core 2 is increased, so that the bone marrow sample in the bone cavity is obtained at the sampling groove surface 41 position of the biopsy needle core 2, after the biopsy needle core 2 extends into a proper distance, the biopsy needle core 2 is drawn out while being rotated, so that the two sampling groove surfaces 41 are contacted with the circular cavity of the puncture outer needle 1, thereby the spacing groove distance between the two sampling groove surfaces 41 is shortened (the internal cavity is compressed after the bone marrow in the bone cavity is obtained, the internal bone marrow is not easy to be separated, thereby improving the one-time success rate of bone marrow collection in the biopsy puncture, until the biopsy needle core 2 is completely retracted into the puncture outer needle 1, the puncture outer needle 1 is drawn out from the bone cavity, and then the collection of bone cavity marrow is completed.
Example 2
In this embodiment, the bottom end of the outer puncture needle 1 is provided with the circular cutting edge 11, the bottom end of the biopsy needle core 2 is provided with the sampling groove surface 41 and the circular cutting edge 11, and the second section of thread 62 is arranged at the position adjacent to the handheld sleeve 13 in the state of the sampling groove surface 41 and the circular cutting edge 11. One end of the puncture outer needle 1 close to the sampling groove surface 41 is provided with a circular cutting edge 11, and the inner diameter of the circular cutting edge 11 is smaller than the inner diameter of other positions on the puncture outer needle 1; when the distance between the sampling groove surfaces 41 is the largest, the outer diameter of the lower section 43 is larger than the inner diameter of the circular cutting edge 11; when the distance between the sampling groove surfaces 41 is the smallest, the outer diameter of the lower section 43 is smaller than the inner diameter of the circular cutting edge 11.
The rest is the same as in example 1.
Claims (10)
1. The dual-purpose needle for bone marrow puncture and biopsy is characterized by comprising a puncture outer needle (1), a biopsy needle core (2) and an inner core (5), wherein the puncture outer needle (1) and the biopsy needle core (2) are both hollow cavity structures with two communicated ends, the puncture outer needle (1) is sleeved outside the biopsy needle core (2), the biopsy needle core (2) is sleeved outside the inner core (5), the length of the puncture outer needle (1) is smaller than that of the biopsy needle core (2), and the length of the biopsy needle core (2) is smaller than that of the inner core (5); one end of the inner core (5) is provided with a tip part for puncture; the biopsy needle core (2) is provided with an adjusting structure for adjusting the position of the puncture outer needle (1) on the biopsy needle core (2), one end of the biopsy needle core (2) is provided with at least two sampling groove surfaces (41), two adjacent sampling groove surfaces (41) are spaced by a spacing groove, and the outer side of each sampling groove surface (41) is provided with a compression structure for reducing or closing the spacing groove.
2. The dual-purpose needle for bone marrow aspiration and biopsy as set forth in claim 1, wherein the outer needle (1) comprises an upper section (42) and a lower section (43), the adjusting structure is arranged on the upper section (42), and the lower section (43) is composed of a sampling groove surface (41) and a spacing groove; the outer diameter of the upper section (42) is smaller than the inner diameter of the puncture outer needle (1), and when the distance of the spacing grooves between the sampling groove surfaces (41) is the largest, the outer diameter of the lower section (43) is larger than the smallest inner diameter of the puncture outer needle (1); when the distance of the spacing grooves between the sampling groove surfaces (41) is minimum, the outer diameter of the lower section (43) is smaller than the minimum inner diameter of the puncture outer needle (1); a compression structure is formed between the outer diameter of the lower section (43) and the minimum inner diameter of the puncture outer needle (1).
3. The dual-purpose needle for bone marrow aspiration and biopsy as set forth in claim 2, characterized in that the outer needle (1) further comprises an arc transition section (44), and the upper section (42) and the lower section (43) are transitionally connected by the arc transition section (44).
4. The dual-purpose needle for bone marrow puncture and biopsy as set forth in claim 2, characterized in that the end of the outer puncture needle (1) near the sampling groove surface (41) is provided with a circular cutting edge (11), and the inner diameter of the circular cutting edge (11) is smaller than the inner diameter of the other positions on the outer puncture needle (1); when the distance of the spacing grooves between the sampling groove surfaces (41) is the maximum, the outer diameter of the lower section (43) is larger than the inner diameter of the circular cutting edge (11); when the distance of the spacing grooves between the sampling groove surfaces (41) is minimum, the outer diameter of the lower section (43) is smaller than the inner diameter of the circular cutting edge (11); a compression structure is formed between the outer diameter of the lower section (43) and the inner diameter of the circular cutting edge (11).
5. The dual-purpose needle for bone marrow aspiration and biopsy as set forth in claim 1, characterized in that, a hand-held sleeve (13) is arranged at one end of the outer needle (1) far away from the sampling groove surface (41); the outer side wall surface of the puncture outer needle (1) is axially provided with a pressure relief groove (12).
6. The dual-purpose needle for bone marrow aspiration and biopsy as set forth in claim 1, wherein the adjusting structure comprises a hand-held handle (23), a first thread section (61) and a second thread section (62), the first thread section (61) and the second thread section (62) are both disposed on the outer wall of the biopsy needle core (2), the hand-held handle (23) is a hollow structure, the hand-held handle (23) is sleeved on the biopsy needle core (2), and the inner wall of the hand-held handle (23) is provided with inner threads matched with the first thread section (61) and the second thread section (62).
7. The dual-purpose needle for bone marrow aspiration and biopsy as set forth in claim 6, wherein the distance between the end of the biopsy needle core (2) near the sampling groove surface (41) and the second thread segment (62) is not more than the length of the outer needle (1); the distance between one end of the biopsy needle core (2) close to the sampling groove surface (41) and the first thread section (61) is larger than the length of the puncture outer needle (1).
8. The dual-purpose needle for bone marrow aspiration and biopsy as set forth in claim 1, characterized in that the other end of the inner core (5) is provided with a limit sleeve (64), a third thread section (63) is arranged on the inner core (5) near the limit sleeve (64), and an inner thread matching with the third thread section (63) on the inner core (5) is arranged on the inner wall of one end of the biopsy needle core (2).
9. The dual-purpose needle for bone marrow aspiration and biopsy as set forth in claim 1, characterized in that the hollow cavity structures of the outer needle (1) and the biopsy needle core (2) are both cavities with circular cross-sections; the cross sections of the outer walls of the biopsy needle core (2) and the inner core (5) are both circular structures.
10. The dual-purpose needle for bone marrow aspiration and biopsy as set forth in claim 1, wherein the biopsy needle core (2) is provided with graduations (3) on the outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023121328.9U CN214761219U (en) | 2020-12-22 | 2020-12-22 | Dual-purpose needle for marrow puncture and biopsy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023121328.9U CN214761219U (en) | 2020-12-22 | 2020-12-22 | Dual-purpose needle for marrow puncture and biopsy |
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| Publication Number | Publication Date |
|---|---|
| CN214761219U true CN214761219U (en) | 2021-11-19 |
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| CN202023121328.9U Active CN214761219U (en) | 2020-12-22 | 2020-12-22 | Dual-purpose needle for marrow puncture and biopsy |
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| CN (1) | CN214761219U (en) |
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Effective date of registration: 20221011 Address after: Room 402-1, Building 8, No. 760, Xinjun Ring Road, Minhang District, Shanghai, 201114 Patentee after: SHANGHAI ANGPU BIOTECHNOLOGY CO.,LTD. Address before: 200032 No. 136, Xuhui District Medical College, Shanghai Patentee before: ZHONGSHAN HOSPITAL, FUDAN University |