CN217365923U

CN217365923U - Biopsy needle assist device

Info

Publication number: CN217365923U
Application number: CN202221171050.2U
Authority: CN
Inventors: 田庆; 谢永召
Original assignee: Beijing Baihui Weikang Technology Co Ltd
Current assignee: Beijing Baihui Weikang Technology Co Ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-09-06
Anticipated expiration: 2032-05-13

Abstract

The present application provides a biopsy needle assist device. The biopsy needle adjusting device comprises a shell and an adjusting component, wherein a groove for accommodating a biopsy needle is formed in the upper surface of the shell; the regulation and control subassembly is including adjusting pole and fixture block, it is provided with the fixed part to adjust the pole tip, the fixed part is used for the plunger core bar top of fixed biopsy needle, it makes the plunger core bar remove in the cylinder to adjust the pole through tensile, it has the rack structure to adjust the pole, the fixture block sets up in the casing inner chamber, when tensile is adjusted the pole, through rack structure and fixture block cooperation, can restrict the removal of adjusting the pole under the effect of suction in the cylinder, thereby avoid at the suction in-process, operator's hand is loosened or when not enough hard, the condition of the plunger core bar suck-back of biopsy needle appears, and then avoid the above-mentioned condition to cause the damage to patient's health, make the use of biopsy needle safer.

Description

Biopsy needle assist device

Technical Field

The application relates to the technical field of medical tools, in particular to a biopsy needle assist device.

Background

Among medical instruments, a syringe is a common medical instrument and consists of a syringe with a small hole at the front end and a matched piston core rod, and a needle is arranged on the small hole at the front end, so that liquid can be extracted and injected. Such syringes are used in a wide range of applications, and are also commonly used in the field of biopsy aspiration techniques.

In the prior art, a biopsy needle is used as an injector in many surgeries, particularly in neurosurgery, a biopsy sample is usually taken from the body of a patient by using the biopsy needle, and the direct puncture of the biopsy needle has a certain disadvantage that the plunger rod of the biopsy needle is easy to suck backwards if the hand of an operator is loosened or insufficient force is exerted during the suction process, so that the body of the patient is damaged.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, embodiments of the present invention provide a biopsy needle assist device to solve the above problems, including but not limited to use in neurosurgery.

One or more embodiments of the present application provide a biopsy needle assist device, including a housing and an adjustment assembly, an upper surface of the housing being provided with a recess for receiving a biopsy needle; the regulation and control subassembly is including adjusting pole and fixture block, adjusts the pole tip and is provided with the fixed part, and the fixed part is used for the piston core bar top of fixed biopsy needle, makes the piston core bar remove in the cylinder of biopsy needle through tensile regulation pole, adjusts the pole and has rack structure, and the fixture block setting is in the casing inner chamber, and is spacing to the regulation pole through rack structure and fixture block cooperation.

Optionally, the bottom surface of the inner cavity of the shell is provided with a fixed cylinder, the fixed cylinder is wound with a torsion spring, one end of the torsion spring is connected with a clamping block, the clamping block is provided with a protrusion, and the protrusion is matched with the teeth of the rack structure.

Optionally, the rack structure is a helical rack, the protrusion has an inclined surface matched with the helical rack, and the inclined surface is matched with the helical rack in the stretching process of the adjusting rod.

Optionally, the fixing portion includes at least a first fixing plate, and the first fixing plate is provided with an accommodating groove, so that the piston stem of the piston core rod is fixed by placing the top end of the piston rod of the piston core rod in the accommodating groove.

Optionally, the fixing portion includes a second fixing plate, the first fixing plate and the second fixing plate are sequentially disposed along a stretching direction of the adjusting rod, and a limiting portion is formed between the first fixing plate and the second fixing plate and used for accommodating the piston handle.

Optionally, the shell further comprises a limiting clamping groove, the limiting clamping groove is arranged at one end, close to the fixing portion of the adjusting rod, of the shell, the limiting clamping groove is perpendicular to the groove, and an upper circular plate of the needle cylinder of the biopsy needle is clamped into the limiting clamping groove to limit movement of the needle cylinder in the length direction of the groove.

Optionally, the biopsy needle assisting device further comprises a limiting plate, the limiting plate is detachably arranged on the limiting clamping groove, and the needle cylinder is limited to move in the length direction of the groove through the matching of the limiting plate and the limiting clamping groove.

Optionally, a contact plate is arranged in the inner cavity of the housing, and the contact plate is in contact with one end of the adjusting rod, which is provided with the rack structure, so as to limit the length of the adjusting rod extending into the cavity.

Optionally, a support body for supporting the adjusting rod is arranged at the lower end of the adjusting rod, and the moving direction of the adjusting rod is parallel to the moving direction of the piston core rod.

Optionally, the biopsy needle assist device further comprises a fixing member for fixing a needle cylinder of the biopsy needle, the fixing member is arranged on the upper surface of the shell, the fixing member comprises a limiting mechanism and a telescopic rod, and the movement direction of the telescopic rod is perpendicular to the direction of the needle cylinder.

Optionally, the groove is an arc-shaped groove, the upper surface of the needle cylinder contacting the biopsy needle on the limiting mechanism is an arc-shaped surface, and the arc-shaped groove and the arc-shaped surface are both matched with the curved surface of the needle cylinder.

Optionally, the housing comprises an upper housing and a lower housing, the upper housing being detachably mounted on the lower housing.

Optionally, a telescopic mechanism or a rubber elastic body is arranged on the side face of the inner cavity of the shell, the telescopic mechanism or the rubber elastic body is fixedly connected with one end of a clamping block, a protrusion is arranged at the other end, opposite to the telescopic mechanism or the rubber elastic body, of the clamping block, the rack structure is a helical rack, and the protrusion is matched with teeth of the rack structure.

According to the embodiment of the application, a biopsy needle assist device is provided. The biopsy needle adjusting device comprises a shell and an adjusting component, wherein a groove for accommodating a biopsy needle is formed in the upper surface of the shell; the regulation and control subassembly is including adjusting pole and fixture block, it is provided with the fixed part to adjust the pole tip, the fixed part is used for the plunger core bar top of fixed biopsy needle, it makes the plunger core bar remove in the cylinder to adjust the pole through tensile, it has the rack structure to adjust the pole, the fixture block sets up in the casing inner chamber, when tensile is adjusted the pole, through rack structure and fixture block cooperation, can restrict the removal of adjusting the pole under the effect of suction in the cylinder, thereby avoid at the suction in-process, operator's hand is loosened or when not enough hard, the condition of the plunger core bar suck-back of biopsy needle appears, and then avoid the above-mentioned condition to cause the damage to patient's health, make the use of biopsy needle safer.

Drawings

The drawings are only for purposes of illustrating and explaining the present application and are not to be construed as limiting the scope of the present application. Wherein the content of the first and second substances,

fig. 1 is a schematic view of an application scenario of a biopsy needle assist device according to an exemplary embodiment of the present application;

FIG. 2 is an external schematic view of a biopsy needle assist device according to an exemplary embodiment of the present application;

FIG. 3 is a schematic view of the internal structure of a biopsy needle assist device according to an exemplary embodiment of the present application;

description of reference numerals:

1. a housing; 11. a groove; 12. a fixing member; 13. a limiting clamping groove; 14. a limiting plate; 15. a touch plate; 16. fixing the cylinder; 17. a torsion spring; 18. a spring; 21. adjusting a rod; 211. a rack structure; 2121. a first fixing plate; 2122. a second fixing plate; 2123. a limiting part; 213. an operating handle; 22. a clamping block; 221. a protrusion; 30. a needle cylinder; 401. a piston rod; 402. a piston handle.

Detailed Description

In order to more clearly understand the technical features, objects and effects of the embodiments of the present application, specific embodiments of the present application will be described with reference to the accompanying drawings.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present application, and they do not represent the actual structure of the product. In addition, for simplicity and clarity of understanding, elements having the same structure or function in some of the figures may be shown only schematically or only schematically.

Before describing the biopsy needle assist device according to the embodiment of the present application, an application scenario of the biopsy needle assist device will be briefly described for easy understanding.

The biopsy needle assist device of the present application can be applied in a scenario where a needle is punctured with a syringe as the biopsy needle. As shown in fig. 1, the syringe is a common medical device, and comprises a syringe barrel 30 with a small hole at the front end and a matched piston core rod, wherein the piston core rod comprises a piston rod 402 and a piston handle 403, and a needle can be installed on the small hole at the front end. Syringes are commonly used in the biopsy technique.

Biopsy samples are usually taken from the body of a patient by using a biopsy needle, and the direct puncture of the biopsy needle has a certain disadvantage that the plunger rod of the biopsy needle is easy to suck back if the hand of an operator is loosened or insufficient force is applied during the suction process, so that the body of the patient is damaged. In view of the above, the present application provides a biopsy needle assisting device, which can solve the above problems in the prior art.

Specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 3, the biopsy needle assist device of the present embodiment includes a housing 1 and an adjustment assembly.

The upper surface of the housing 1 is provided with a recess 11, the recess 11 being adapted to receive a biopsy needle.

Regulation and control subassembly is including adjusting pole 21 and fixture block 22, be provided with the fixed part on adjusting pole 21, the fixed part is used for the plunger core bar top of fixed biopsy needle, it makes the plunger core bar remove in syringe 30 through tensile regulation pole 21, it has rack structure 211 to adjust pole 21, fixture block 22 sets up in 1 inner chamber of casing, when tensile regulation pole 21, through rack structure 211 and fixture block 22 cooperation, can restrict the removal of adjusting pole 21 in syringe 30 internal suction effect down, thereby avoid at the suction in-process, operator's hand is loosened or when not enough hard, the condition of the plunger core bar suck-back of biopsy needle appears, and then avoid the above-mentioned condition to cause the damage to the patient's health, make the use of biopsy needle safer. When the limit is required to be removed, the adjusting rod is rotated, so that the matching state of the clamping block and the rack structure is removed, and the adjusting rod can be reset.

In a specific embodiment, the housing 1 may include an upper housing 1 and a lower housing 1, and the upper housing 1 is detachably mounted to the lower housing 1. The mounting mode of the upper shell 1 and the lower shell 1 can be a buckle connection mode, a bolt connection mode or a pin connection mode, and the like, and the upper shell 1 and the lower shell 1 are detachably connected, so that when parts in the shells 1 are damaged, the replacement and the maintenance are convenient.

In one embodiment, the biopsy needle assisting device further comprises a fixing member 12, the fixing member 12 is used for fixing a needle cylinder 30 of the biopsy needle placed in the recess 11, the fixing member 12 is arranged on the upper surface of the housing 1, the fixing member 12 can comprise a limiting mechanism and a telescopic rod, the moving direction of the telescopic rod is perpendicular to the direction of the needle cylinder 30, and the telescopic rod can be used for adjusting the height distance between the fixing member 12 and the recess 11, so that the needle cylinders 30 with different diameter sizes can be conveniently fixed.

Further, in order to facilitate the placement of the biopsy needle in the recess 11 of the housing 1 and to make the fixing member 12 more closely fit to the surface of the needle cylinder 30, in one embodiment, the telescopic shaft may be composed of a spring 18 and a fixing rod, one end of the spring 18 is fixed to the bottom of the inner cavity of the housing 1. Through the spring 18, the rotation angle of the limiting mechanism can be adjusted within a certain range, an operator can conveniently place the biopsy needle into the groove 11 of the shell 1, and the limiting mechanism can be more attached to the surface of the needle cylinder 30, so that the fixing is more reliable.

Alternatively, the fixing member 12 may be a plurality of fixing members 12, and the plurality of fixing members 12 are sequentially arranged at intervals along the length direction of the groove 11; the fixing member 12 may be one, and may be disposed in the middle (length direction) of the groove 11.

In a specific embodiment, the groove 11 on the housing 1 may be an arc-shaped groove 11, and the arc-shaped groove 11 may be a semi-circular groove or a circular part, so as to be conveniently matched with the needle cylinder 30 of the biopsy needle, so that the biopsy needle is more attached to the groove 11 when being placed in the groove 11, and similarly, the upper surface of the needle cylinder 30 on the limiting mechanism, which contacts the biopsy needle, may also be an arc-shaped surface, and the arc-shaped surface is matched with the curved surface of the needle cylinder 30, so that the fixation is more reliable.

Referring to fig. 1, in a specific embodiment, the housing 1 may further include a limiting clamping groove 13, the limiting clamping groove 13 is disposed at one end of the housing 1 close to the fixing portion of the adjusting rod 21, the limiting clamping groove 13 is perpendicular to the groove 11 on the housing 1, and an upper circular plate of the needle cylinder 30 of the biopsy needle is clamped into the limiting clamping groove 13, so as to limit movement of the needle cylinder 30 in the length direction of the groove 11, and prevent the needle cylinder 30 from being driven to move when the plunger rod is pulled.

In a specific embodiment, the biopsy needle assisting device further comprises a limiting plate 14, the limiting plate 14 is detachably disposed on the limiting clamping groove 13, the limiting plate 14 can be a transparent acrylic plate, and when the biopsy needle is placed in the groove 11, the limiting plate 14 and the limiting clamping groove 13 are matched to limit the needle cylinder 30 to move towards the stretching direction of the adjusting rod 21, so that the situation that an operator stretches the adjusting rod 21 and drives the needle cylinder 30 to move towards the stretching direction of the adjusting rod 21 is avoided.

Referring to fig. 3, in an embodiment, in order to prevent the plunger core bar of the biopsy needle from sucking backwards and facilitate the operator to stretch the adjusting rod 21, a fixing cylinder 16 may be disposed on the bottom surface of the inner cavity of the housing 1, a torsion spring 17 may be wound on the fixing cylinder 16, one end of the torsion spring 17 is connected to the latch 22, a protrusion 221 may be disposed on the latch 22, and the protrusion 221 is engaged with the teeth of the rack structure 211, so that the latch 22 is engaged with the rack structure 211 more tightly. When an operator stretches the adjusting rod 21, the fixture block 22 can move within a certain range through the rotation of the torsion spring 17 on the fixing cylinder 16, so that the operator can more save labor when stretching the adjusting rod 21; in addition, the fixture block 22 moves when the adjusting rod 21 is stretched, so that the abrasion between the fixture block 22 and the rack structure 211 can be reduced, and the service life can be prolonged.

In a specific embodiment, the rack structure 211 of the adjusting lever 21 may be a helical rack, the protrusion 221 of the fixture block 22 may be provided with an inclined surface matched with the helical rack, and in the process of stretching the adjusting lever 21 by an operator, the inclined surface of the protrusion 221 is matched with the helical rack, so that the stretching operation is more labor-saving, and the operator can operate the adjusting lever conveniently; when the operator stops stretching the adjusting rod 21, the protrusion 221 of the fixture block 22 is matched with the rack structure 211, so that the situation that the piston core rod of the biopsy needle is sucked backwards is avoided, further the situation that the body of the patient is damaged by the situation is avoided, and the use process of the biopsy needle is safer.

In a specific embodiment, a telescopic mechanism or a rubber elastic body may be further disposed on a side surface of the inner cavity of the housing 1, the telescopic mechanism may be a spring structure, the telescopic mechanism or the rubber elastic body is fixedly connected to one end of the latch 22, a protrusion 221 is disposed at the other end of the latch 22 opposite to the end where the telescopic mechanism or the rubber elastic body is connected, the rack structure 211 may be a helical rack, and the protrusion 221 is matched with a tooth of the rack structure 211. The fixture block 22 can move within a certain range through the extension and retraction of the extension and retraction mechanism or the rubber elastic body, so that the labor is saved when an operator stretches the adjusting rod 21; in addition, the fixture block 22 moves when the adjusting rod 21 is stretched, so that the abrasion between the fixture block 22 and the rack structure 211 can be reduced, and the service life can be prolonged.

Referring to fig. 2, in an embodiment, the fixing portion of the adjusting lever 21 at least includes a first fixing plate 2121, and the first fixing plate 2121 may have a receiving groove, which may be a groove with an upward opening or a slot with an opening on a side surface of the first fixing plate 2121, which is not limited in this embodiment. The top end of the piston rod 402 of the piston core rod is arranged in the accommodating groove to fix the piston handle 403 of the piston core rod, so that the fixing mode is simple and the operation is convenient.

In one embodiment, the fixing portion may further include a second fixing plate 2122, the first fixing plate 2121 and the second fixing plate 2122 are sequentially disposed along the stretching direction of the adjusting rod 21, and a limiting portion 2123 is formed between the first fixing plate 2121 and the second fixing plate 2122, when the piston rod 402 of the piston rod core is disposed in the receiving groove, the piston stem 403 is disposed in the limiting portion 2123, so as to fix the piston stem 403 of the piston rod core better, and the fixing is more reliable.

Referring to fig. 3, in order to facilitate the operator to stretch the adjusting lever 21, in a specific embodiment, an operation handle 213 may be disposed at the tail end of the adjusting lever 21 to facilitate the operator to stretch the adjusting lever 21; further, in order to facilitate the operator to rotate the adjustment lever 21 to release the limit, the operation handle 213 may be provided with an anti-slip structure such as a screw.

In one embodiment, the lower end of the adjusting rod 21 is further provided with a support body for supporting the adjusting rod 21 to keep the adjusting rod 21 horizontal, so that when the operator stretches the adjusting rod 21, the moving direction of the adjusting rod 21 is kept parallel to the moving direction of the plunger rod.

In one embodiment, a contact plate 15 may be disposed in the inner cavity of the housing 1, and when the adjusting rod 21 is pushed, the contact plate 15 contacts with an end of the adjusting rod 21 having the rack structure 211, so as to limit the length of the adjusting rod 21 extending into the cavity.

It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It should be noted that, although the specific embodiments of the present application have been described in detail with reference to the accompanying drawings, the present application should not be construed as limited to the scope of the present application. Various modifications and changes may be made by those skilled in the art without inventive work within the scope of the appended claims.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The examples of the embodiments of the present application are intended to briefly explain the technical features of the embodiments of the present application, so that those skilled in the art can intuitively understand the technical features of the embodiments of the present application, and the embodiments of the present application are not unduly limited.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A biopsy needle assist device, comprising:

the biopsy needle comprises a shell (1), wherein a groove (11) for accommodating a biopsy needle is formed in the upper surface of the shell (1);

the regulation and control subassembly, the regulation and control subassembly is including adjusting pole (21) and fixture block (22), it is provided with the fixed part to adjust pole (21) tip, the fixed part is used for fixing the piston core bar top of biopsy needle makes through tensile pole (21) is adjusted the piston core bar and is in move in cylinder (30) of biopsy needle, it has rack structure (211) to adjust pole (21), fixture block (22) set up in casing (1) inner chamber, through rack structure (211) with fixture block (22) cooperation, it is right adjust pole (21) spacing.

2. The biopsy needle assistant device according to claim 1, wherein a fixing cylinder (16) is arranged on the bottom surface of the inner cavity of the housing (1), a torsion spring (17) is wound on the fixing cylinder (16), one end of the torsion spring (17) is connected with the fixture block (22), a protrusion (221) is arranged on the fixture block (22), and the protrusion (221) is matched with the teeth of the rack structure (211).

3. Biopsy needle aid according to claim 2, wherein the rack structure (211) is provided as a helical rack, the protrusion (221) having a bevel cooperating with the helical rack during stretching of the adjustment lever (21).

4. The biopsy needle assistant device of claim 1, wherein the fixing part comprises at least a first fixing plate (2121), and the first fixing plate (2121) is provided with a receiving groove, and the top end of the piston rod (401) of the piston core rod is placed in the receiving groove to fix the piston stem (402) of the piston core rod.

5. The biopsy needle assist device according to claim 4, wherein the fixing portion comprises a second fixing plate (2122), the first fixing plate (2121) and the second fixing plate (2122) are sequentially arranged along a stretching direction of the adjusting rod (21), and a limiting portion (2123) is formed between the first fixing plate (2121) and the second fixing plate (2122), and the limiting portion (2123) is used for accommodating the piston stem (402).

6. The biopsy needle assist device according to claim 1, wherein the housing (1) further comprises a limiting clamping groove (13), the limiting clamping groove (13) is arranged at one end of the housing (1) close to the fixing part of the adjusting rod (21), the limiting clamping groove (13) is perpendicular to the groove (11), an upper circular plate of a needle cylinder (30) of the biopsy needle is clamped into the limiting clamping groove (13) to limit the movement of the needle cylinder (30) in the length direction of the groove (11).

7. The biopsy needle assist device according to claim 6, further comprising a limiting plate (14), wherein the limiting plate (14) is detachably arranged on the limiting slot (13), and the limiting plate (14) and the limiting slot (13) are matched to limit the movement of the needle cylinder (30) in the length direction of the groove (11).

8. Biopsy needle aid according to claim 1, wherein an abutment plate (15) is arranged in the inner cavity of the housing (1), by means of which abutment plate (15) contact is made with the end of the adjustment lever (21) having the rack structure (211) to limit the length of the adjustment lever (21) protruding into the inner cavity.

9. The biopsy needle assistant according to claim 1, characterized in that the lower end of the adjusting rod (21) is provided with a supporting body for supporting the adjusting rod (21), and the moving direction of the adjusting rod (21) is parallel to the moving direction of the plunger rod.

10. The biopsy needle assist device according to claim 1, further comprising a fixing member (12) for fixing a needle cylinder (30) of the biopsy needle, wherein the fixing member (12) is disposed on an upper surface of the housing (1), and the fixing member (12) comprises a limiting mechanism and a telescopic rod, and a moving direction of the telescopic rod is perpendicular to a direction of the needle cylinder (30).

11. The biopsy needle assist device according to claim 10, wherein the recess (11) is an arc-shaped recess, and an upper surface of the stopper mechanism contacting the needle cylinder (30) of the biopsy needle is an arc-shaped surface, and both the arc-shaped recess and the arc-shaped surface are fitted to a curved surface of the needle cylinder (30).

12. Biopsy needle aid according to claim 1, wherein the housing (1) comprises an upper housing and a lower housing, the upper housing being detachably mounted on the lower housing.

13. The biopsy needle assistant device according to claim 1, wherein a telescopic mechanism or a rubber elastic body is arranged on the side surface of the inner cavity of the housing (1), the telescopic mechanism or the rubber elastic body is fixedly connected with one end of the fixture block (22), the other end of the fixture block (22), which is opposite to the connection of the telescopic mechanism or the rubber elastic body, is provided with a protrusion (221), the rack structure (211) is arranged as a helical rack, and the protrusion (221) is matched with the teeth of the rack structure (211).