CN214856962U - Biopsy needle and full-automatic biopsy needle - Google Patents

Abstract

The utility model relates to the technical field of puncture equipment, in particular to a biopsy needle and a full-automatic biopsy needle, the biopsy needle comprises an inner needle, an inner needle seat connected with the inner needle, an outer needle and an outer needle seat connected with the outer needle, and back-off structures are arranged between the inner needle and the inner needle seat and between the outer needle and the outer needle seat; the reverse buckling structure limits the relative movement between the inner needle and the inner needle seat and between the outer needle and the outer needle seat along the axial direction of the inner needle and the outer needle. The utility model provides an among the technical scheme, the inertial displacement that interior needle and outer needle produced because of self high-speed motion can be avoided to the back-off structure, can avoid because of interior needle and interior needle holder separation to it is accurate to make interior needle and outer needle position cooperation, and it is accurate to arouse the range, can accurately reach the focus position according to operation doctor's settlement position, and protection medical personnel and patient's personal safety. The utility model provides an among the technical scheme, the biopsy needle has structure safety, reliable, stable characteristic.

Description

Biopsy needle and full-automatic biopsy needle

Technical Field

The utility model relates to a puncture equipment technical field especially relates to a biopsy needle and full-automatic biopsy needle.

Background

Tissue tumors are diseases that seriously harm human health and life, and in recent years, the incidence rate gradually increases and the onset age gradually decreases, so that it is important to diagnose tissue tumors as early as possible and accurately. The correct diagnosis requires a combination of clinical, imaging and pathology, wherein the pathological diagnosis plays a key role in the selection of a treatment plan, and needle biopsy is the main way to obtain a tissue sample.

The most basic requirements of the needle biopsy of any part of a patient, such as tissues of prostate, kidney, liver, spleen, mammary gland and the like, and the main sampling instrument used in the operation process are a biopsy needle and a qualified biopsy needle, so that the operation can be successfully carried out, and the safety of the patient and medical care personnel in the operation process is guaranteed.

The fully automatic biopsy needle is the commonly used equipment for the puncture biopsy at present, during the puncture biopsy operation, a doctor takes out the biopsy needle from a packaging box, and respectively presses two corresponding upper chord buttons, so that the inner needle and the outer needle are driven to retract to limited positions, the spring is compressed, and the inner needle and the outer needle are in a state to be excited at the moment. Under the guide of ultrasonic imaging equipment, after the puncture position is determined, the trigger button is pushed, the inner needle and the outer needle are released, the resilience force released by the spring drives the inner needle and the outer needle to rapidly advance towards a focus area, the triggering of the inner needle and the outer needle has time difference, namely, the inner needle firstly enters the focus, and the outer needle enters the focus, so that a certain tissue sample is obtained in the inner needle sampling groove.

When the biopsy needle is excited, the inner needle and the outer needle are subjected to larger resilience force, so the release speed is very high, and after the inner needle and the outer needle reach the limited position, the needle bases of the inner needle and the outer needle can apply certain acting force to the limited structure due to inertia. Therefore, if the inner needle and the outer needle are not firmly connected with the corresponding needle seats, the inner needle and the outer needle can move to certain positions, so that the puncture needle cannot reach the preset position, and in severe cases, the inner needle and the outer needle can be separated from the full-automatic biopsy needle and fly out, thereby bringing certain harm to the safety of patients and medical staff.

SUMMERY OF THE UTILITY MODEL

The utility model provides a biopsy needle and full-automatic biopsy needle, back-off structure can avoid producing relative displacement or separation between inner needle and the inner needle file, between outer needle and the outer needle file, and then make inner needle and outer needle position cooperation accurate, arouse the range accurate to and safe and reliable more during the use.

One aspect of the utility model provides a biopsy needle, which comprises an inner needle, an inner needle seat connected with the inner needle, an outer needle and an outer needle seat connected with the outer needle, wherein a back-off structure is arranged between the inner needle and the inner needle seat and between the outer needle and the outer needle seat; the reverse buckling structure limits the relative movement between the inner needle and the inner needle seat and between the outer needle and the outer needle seat along the axial direction of the inner needle and the outer needle.

Optionally, be equipped with bellied back-off structure on the outer wall of interior needle, the back-off structure is located interior needle file, is equipped with the cavity that is used for holding the back-off structure in the interior needle file, perhaps, is equipped with the back-off structure of indent on the outer wall of interior needle, and the back-off structure is located interior needle file, is equipped with the dog that is used for inserting the back-off structure in the interior needle file.

Optionally, the outer wall of the outer needle is provided with a raised back-off structure, the back-off structure is located in the outer needle seat, and a cavity for accommodating the back-off structure is arranged in the outer needle seat.

Optionally, the inner needle and the inner needle holder are of an integral structure, and the outer needle holder are of an integral structure.

Optionally, a raised inverted structure is arranged on the outer wall of the inner needle, and the inverted structure comprises at least one raised edge.

Optionally, the undercut structure comprises a plurality of raised ribs uniformly arranged along a circumferential direction of the inner pin.

Optionally, an inwards concave inverted structure is arranged on the outer wall of the inner needle, and the inverted structure is a notch.

Optionally, the notch has a set width in the direction of the inner needle axis, and the depth of the notch is not less than the radius of the inner needle.

Optionally, the reversing structure comprises a sleeve in a shape of a circular truncated cone, a first end of the sleeve is connected with the tail end of the outer needle, the outer diameter of the first end is the same as that of the outer needle, and the outer diameter of a second end of the sleeve is larger than that of the first end; the one end that outer needle file kept away from outer needle point is equipped with the recess that is used for the holding sleeve, and the cross-section of recess is the horn mouth form, the lateral wall butt of telescopic outer wall and recess.

The utility model also provides a full-automatic biopsy needle in another aspect, including above-mentioned biopsy needle.

The utility model provides an among the technical scheme, set up the back-off structure between needle body (including interior needle and outer needle) and needle file (including interior needle file and outer needle file), the back-off structure plays the fixed action, can make the needle body be connected more firmly with the needle file.

When the biopsy needle is used, the inverted buckle structure can avoid the inertial displacement of the inner needle and the outer needle caused by self high-speed movement, and can avoid the separation of the inner needle and the inner needle seat, so that the position of the inner needle and the position of the outer needle are accurately matched, the excitation range is accurate, the focus position can be accurately reached according to the set position of an operation doctor, and the personal safety of medical care personnel and patients is protected. The utility model provides an among the technical scheme, the biopsy needle has structure safety, reliable, stable characteristic.

Drawings

For purposes of illustration and not limitation, the present invention will now be described in accordance with its preferred embodiments, particularly with reference to the accompanying drawings, in which:

fig. 1 is a cross-sectional view of an inner needle of a biopsy needle provided in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an outer needle of a biopsy needle provided in accordance with an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of the inner needle hub of FIG. 1;

FIG. 4 is a schematic structural view of the inverted structure on the inner needle in FIG. 1;

FIG. 5 is an enlarged view of a portion of the outer needle hub of FIG. 2;

FIG. 6 is a schematic structural view of the reverse-buckling structure on the outer needle in FIG. 2;

fig. 7 is another schematic structural diagram of an inverted buckle structure in a biopsy needle according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view of the undercut in FIG. 7 in use;

fig. 9 is a schematic structural diagram of a fully automatic biopsy needle provided by an embodiment of the present invention;

fig. 10 is an exploded view of a fully automatic biopsy needle according to an embodiment of the present invention.

In the figure:

1: a rear firing button; 2: a handle; 3: a left slide rail; 4: a right slide rail; 5: a spring; 6: a side firing button; 7: an inner needle assembly; 8: an outer needle assembly; 9: a front cover plate; 10: a first winding button; 11: a second winding button; 71: an inner needle base; 72: an inner needle; 81: an outer needle holder; 82: an outer needle; 722: a raised edge; 723: a notch; 822: a sleeve.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present application. For the sake of brevity, the same or similar reference numerals are used for the same or similar apparatus/method steps in the description of the various embodiments of the present application.

In addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Fig. 1 is a cross-sectional view of an inner needle of a biopsy needle provided in an embodiment of the present invention; fig. 2 is a sectional view of an outer needle of a biopsy needle according to an embodiment of the present invention. As shown in fig. 1 and 2, the biopsy needle includes an inner needle 72, an inner needle holder 71 connected with the inner needle 72, an outer needle 82, and an outer needle holder 81 connected with the outer needle 82, and a back-off structure is provided between the inner needle 72 and the inner needle holder 71, and between the outer needle 82 and the outer needle holder 81; the reverse buckling structure limits the relative movement between the inner needle 72 and the inner needle seat 71 and between the outer needle 82 and the outer needle 82 seat along the axial direction of the inner needle 72 and the outer needle 82.

The barb structure belongs to the limit structure of the axial direction of the inner needle 72 and the outer needle 82, and can avoid axial movement or separation between the needle body (the inner needle 72 and the outer needle 82) and the needle seat (the inner needle seat 71 and the outer needle seat 81), so that the needle body is more firmly connected with the needle seat. When the biopsy needle is used, the inverted buckle structure can avoid the inertia displacement of the inner needle 72 and the outer needle 82 caused by self high-speed movement, and can avoid the separation of the inner needle 72 and the inner needle 72 seat, so that the positions of the inner needle 72 and the outer needle 82 are accurately matched, the firing range is accurately excited, the focus position can be accurately reached according to the set position of an operation doctor, and the personal safety of medical personnel and patients is protected. The utility model provides an among the technical scheme, the biopsy needle has structure safety, reliable, stable characteristic.

The utility model discloses in the embodiment, be equipped with bellied back-off structure on the outer wall of inner needle, the back-off structure is located inner needle file 71, is equipped with the cavity that is used for holding back-off structure in the inner needle file 71, perhaps, is equipped with the back-off structure of indent on the outer wall of inner needle 72, and the back-off structure is located inner needle file 71, is equipped with the dog that is used for inserting the back-off structure in the inner needle file 71. The outer wall of the outer needle 82 is provided with a raised back-off structure, the back-off structure is positioned in the outer needle seat 81, and a cavity for accommodating the back-off structure is arranged in the outer needle seat 81. The inner needle 72 is a solid structure, and the outer needle 82 is a hollow structure, so the reverse structure on the inner needle 72 can be a convex structure or a concave structure, and the reverse structure on the outer needle 82 is only a convex structure.

The utility model discloses in the embodiment, interior needle 72 and interior needle file 71 structure as an organic whole, outer needle 82 and outer needle file 81 structure as an organic whole, wherein, interior needle 72 and interior needle file 71, outer needle 82 adopt integrative injection moulding with outer needle file 81, adopt injection moulding's structure, make both connect inseparabler firm more, further improve the stability that needle body and needle file are connected.

FIG. 3 is an enlarged view of a portion of the inner needle hub of FIG. 1; fig. 4 is a schematic structural view of the inverted structure on the inner needle in fig. 1. As shown in fig. 1, 3 and 4, the outer wall of the inner needle 72 is provided with a raised inverted structure, and the inverted structure comprises at least one raised rib 722. The undercut structure includes a plurality of protruding ribs 722, and the plurality of protruding ribs 722 are uniformly arranged in the circumferential direction of the inner needle 72. Raised ribs 722 expand the outer diameter of inner needle 72 and this feature is inserted into inner needle hub 71 to provide a more secure connection of inner needle 72 to inner needle hub 71.

Fig. 7 is another schematic structural diagram of an inverted buckle structure in a biopsy needle according to an embodiment of the present invention; fig. 8 is a sectional view of the flip-flop structure of fig. 7 in use. As shown in fig. 7 and 8, an inner inverted structure is provided on the outer wall of the inner needle 72, and the inverted structure is a notch 723. The gap 723 has a set width in the axial direction of the inner needle 72, and the depth of the gap 723 is not less than the radius of the inner needle 72. The inner needle hub 71 is provided with a corresponding raised stop which is inserted into the notch 723 to form a secure stop.

FIG. 5 is an enlarged view of a portion of the outer needle hub of FIG. 2; fig. 6 is a schematic structural view of the reverse structure on the outer needle in fig. 2. As shown in fig. 2, 5 and 6, the inverted structure includes a sleeve 822 in a truncated cone shape, a first end of the sleeve 822 is connected with the tail end of the outer needle 82, the outer diameter of the first end is the same as that of the outer needle 82, and the outer diameter of a second end of the sleeve 822 is larger than that of the first end; the end of the outer needle seat 81 far away from the needle point of the outer needle 82 is provided with a groove for accommodating the sleeve 822, the cross section of the groove is in a bell mouth shape, and the outer wall of the sleeve 822 is abutted against the side wall of the groove. The back-off structure is a round platform structure, which can limit the position of the outer needle 82 and increase the diameter of the outer needle to facilitate the insertion of the inner needle 72.

Fig. 9 is a schematic structural diagram of a fully automatic biopsy needle provided by an embodiment of the present invention; fig. 10 is an exploded view of a fully automatic biopsy needle according to an embodiment of the present invention. As shown in fig. 9 and 10, the fully automated biopsy needle comprises a power unit, an inner needle assembly 7 and an outer needle assembly 8. The power device comprises a first winding button 10, a second winding button 11, a handle 2, a front cover plate 9, a side excitation button 6, a rear excitation button 1, a left slide rail 3, a right slide rail 4 and a spring 5, an inner needle assembly 7 comprises an inner needle 72 and an inner needle seat 71, and an outer needle assembly 8 comprises an outer needle 82 and an outer needle seat 81.

With continued reference to fig. 9 and 10, as shown, when the fully automatic biopsy needle is used, a gear with a proper range is determined according to the position and size of a lesion; pressing the first winding button 10 to a limited position along the arrow direction on the first winding button 10, and at the same time, contracting the outer needle 82 to the limited position; the second winding-up button 11 is pressed in the direction of the arrow on the second winding-up button 11 to a defined position, at which time the inner needle 72 is retracted to the defined position. Under the guidance of ultrasonic imaging equipment, confirming that the biopsy needle penetrates into a corresponding part of a human body, pushing an excitation button (a side excitation button 6 or a back excitation button 1) at the moment, releasing an inner needle 82 and an outer needle 82 at intervals, namely, the inner needle 72 firstly penetrates into a focus, and then the outer needle 82 penetrates into the focus again, so that a certain tissue sample is obtained in a sampling groove of the inner needle 72 of the biopsy needle, then, taking out the biopsy needle, placing a tissue sample strip into a designated vessel, and finishing one-time puncture sampling operation.

The back-off structure can avoid the inertial displacement of interior needle 72 and outer needle 82 because of self high-speed motion production to and can avoid because of interior needle 72 and the separation of interior needle 72 seat, thereby it is accurate to make interior needle 72 and outer needle 82 position cooperation, and it is accurate to arouse the range, can accurately reach the focus position according to operation doctor's settlement position, and protection medical personnel and patient's personal safety.

The above detailed description does not limit the scope of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A biopsy needle comprises an inner needle (72), an inner needle seat (71) connected with the inner needle (72), an outer needle (82) and an outer needle seat (81) connected with the outer needle (82), and is characterized in that a back-off structure is arranged between the inner needle (72) and the inner needle seat (71) and between the outer needle (82) and the outer needle seat (81);

the reverse buckling structure limits the relative movement between the inner needle (72) and the inner needle seat (71) and between the outer needle (82) and the outer needle seat (81) along the axial direction of the inner needle (72) and the outer needle (82).

2. The biopsy needle according to claim 1, wherein the outer wall of the inner needle (72) is provided with a raised back-off structure, the back-off structure is located in the inner needle seat (71), a cavity for accommodating the back-off structure is arranged in the inner needle seat (71), or the outer wall of the inner needle (72) is provided with a recessed back-off structure, the back-off structure is located in the inner needle seat (71), and a stop for inserting the back-off structure is arranged in the inner needle seat (71).

3. A biopsy needle according to claim 2, wherein the outer wall of the outer needle (82) is provided with a raised back-off structure, the back-off structure being located within the outer needle hub (81), the outer needle hub (81) being provided with a cavity for receiving the back-off structure.

4. A biopsy needle according to claim 3, wherein the inner needle (72) is of unitary construction with the inner needle hub (71) and the outer needle (82) is of unitary construction with the outer needle hub (81).

5. The biopsy needle of claim 2, wherein the outer wall of the inner needle (72) is provided with a raised undercut, the undercut comprising at least one raised rib (722).

6. The biopsy needle of claim 5, wherein the undercut structure comprises a plurality of raised ribs (722), the plurality of raised ribs (722) being evenly arranged along a circumferential direction of the inner needle (72).

7. The biopsy needle of claim 2, wherein the outer wall of the inner needle (72) is provided with an undercut, the undercut being a notch (723).

8. The biopsy needle of claim 7, wherein the notch (723) has a set width in the direction of the inner needle (72) axis, and the depth of the notch (723) is not less than the radius of the inner needle (72).

9. The biopsy needle of claim 3, wherein the inverted structure comprises a sleeve (822) having a truncated cone shape, a first end of the sleeve (822) is connected with the trailing end of the outer needle (82), the outer diameter of the first end is the same as that of the outer needle (82), and the outer diameter of a second end of the sleeve (822) is larger than that of the first end;

one end of the outer needle seat (81) far away from the needle point of the outer needle (82) is provided with a groove for accommodating the sleeve, the cross section of the groove is in a horn mouth shape, and the outer wall of the sleeve (822) is abutted against the side wall of the groove.

10. A fully automated biopsy needle comprising a biopsy needle according to any of claims 1 to 9.

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