CN111434312A - Syringe frame and puncture outfit - Google Patents

Abstract

The invention relates to a syringe rack and a puncture outfit, wherein the syringe rack is used for being installed on a syringe, and comprises: the fixing piece extends along a first direction, the fixing piece is provided with a first cavity and a handheld part, a needle cylinder of the injector is inserted into the first cavity of the fixing piece and is fixedly connected with the fixing piece, and at least part of a piston of the injector is positioned in the first cavity of the fixing piece; the sliding part is arranged on the fixing part and can slide relative to the fixing part along the first direction, the sliding part is provided with a connecting part, and the connecting part is used for being connected with the piston in the needle cylinder and can drive the piston to move in the first cavity of the fixing part along the first direction. After the injector frame is arranged on the injector, the operator can conveniently perform puncture suction examination, and the puncture is stable.

Description

Syringe frame and puncture outfit

Technical Field

The invention relates to the technical field of injectors, in particular to an injector frame and a puncture outfit.

Background

Thyroid diseases are common diseases in the field of endocrine, a plurality of methods for diagnosing the thyroid diseases exist in the medical field, but the methods have different limitations, and the thyroid puncture is widely applied to clinical treatment nowadays due to accurate precision and high cost performance, and is an important method for preoperative diagnosis of the thyroid diseases. Unnecessary operations of patients are avoided in the fine thyroid needle puncture, and morbidity and mortality of the patients after the operations are greatly reduced. When puncturing, the patient takes the horizontal position, the neck is raised, and the thyroid is fully exposed. After disinfection, an operator fixedly punctures the thyroid gland or thyroid nodule on the side by using an index finger and a middle finger of one hand, holds an injector by using one hand, leaves 1-2ml of air in a needle cylinder, quickly punctures a puncture needle into the thyroid gland (or the inside of the nodule) through the skin, pumps a little negative pressure by using an empty needle, then punctures the thyroid gland or the thyroid nodule for 2-3 times back and forth in different directions, quickly eliminates the negative pressure, extracts a needle head, punctures a local cotton ball and compresses for a few minutes. And (3) injecting the aspirate on a glass slide, pushing the glass slide away uniformly, and fixing the smear with 95% alcohol for inspection after the smear is dried.

The conventional aspiration biopsy for thyroid, lymph node, mammary gland and other parts adopts a common injector, and in the aspiration process, a doctor needs to finish the aspiration action of the injector with one hand, and ensures the accuracy and stability of the aspiration, so that the operation is very inconvenient, and the problems of unstable aspiration action, deviation of the aspiration and the like are often caused.

Disclosure of Invention

The invention solves the problems that the prior puncture outfit has inconvenient suction action and unstable puncture when puncture suction inspection is carried out.

In order to solve the above problems, an object of the present invention is to provide a syringe holder to be mounted to a syringe, including: the fixing piece extends along a first direction, the fixing piece is provided with a first cavity and a handheld part, a needle cylinder of the injector is inserted into the first cavity of the fixing piece and is fixedly connected with the fixing piece, and at least part of a piston of the injector is positioned in the first cavity of the fixing piece; the sliding part is arranged on the fixing part and can slide relative to the fixing part along the first direction, the sliding part is provided with a connecting part, and the connecting part is used for being connected with the piston in the needle cylinder and can drive the piston to move in the first cavity of the fixing part along the first direction.

Optionally, the hand-held portion is a first force-bearing point, along the first direction, one end of the fixing member away from the needle cylinder is a second force-bearing point, and the slider is a third force-bearing point.

Optionally, the fixing member is provided with a first opening extending in the first direction, the first opening exposes the piston, and the connecting portion is disposed toward the first opening.

Optionally, the sliding part is provided with a poking piece for poking the sliding part to slide along the first direction relative to the fixed part.

Optionally, one side of the sliding part, which faces away from the fixing part, is provided with the poking piece, and along the first direction, one end of the poking piece is a first poking part, and the other end of the poking piece is a second poking part.

Optionally, the paddle has an opening.

Optionally, one side of the fixed part, which faces away from the sliding part, is provided with the handheld part.

Optionally, the shape of the hand-held portion comprises a ring, an arc or a rectangle.

Optionally, along the first direction, the sliding part has a first shifting piece and a second shifting piece which are sequentially arranged at intervals.

Optionally, a gear is arranged on the moving path of the sliding part and used for reminding the suction volume or the injection volume of the injector.

Optionally, the gear comprises at least one first gear arranged on the sliding part and at least one second gear arranged on the fixed part, and a stroke of the first gear moving against the second gear along the first direction is a preset value, and the preset value corresponds to a suction amount or an injection amount of the injector; when the first gear piece moves to abut against the second gear piece, the sliding piece can continue to move relative to the fixed piece in the first direction under the action of external force.

Optionally, the sliding part has a first end and a second end along the circumferential direction, and at least one of the first end and the second end of the sliding part is provided with the first gear; and the part of the fixed piece, which corresponds to the end part of the sliding piece provided with the first gear piece, is provided with the second gear piece.

Optionally, the cross section of the contact surface of the sliding part, which is attached to the outer surface of the fixed part, is an arc surface.

Optionally, the arc surface is a preferential arc surface.

The present invention also provides a puncture instrument, comprising: a syringe, the syringe comprising: the needle cylinder extends along the first direction and is provided with a second cavity, and the needle cylinder is used for arranging a puncture needle communicated with the second cavity; a piston having a first end and a second end along the first direction, the first end being disposed within the second cavity; in the syringe rack of any of the above embodiments, the syringe is inserted into the first cavity of the fixing member and is fixedly connected to the fixing member, and the second end of the piston extends out of the second cavity and is located in the first cavity of the fixing member and is connected to the connecting portion.

Optionally, the fixing member is provided with a first opening extending in the first direction, the first opening exposes the second end of the piston, and the connecting portion is disposed toward the first opening.

As described above, the present invention provides a syringe holder comprising: the fixing piece extends along a first direction, the fixing piece is provided with a first cavity and a handheld part, a needle cylinder of the injector is inserted into the first cavity of the fixing piece and is fixedly connected with the fixing piece, and at least part of a piston of the injector is positioned in the first cavity of the fixing piece; and the sliding part is arranged on the fixed part and can slide relative to the fixed part along a first direction, the sliding part is provided with a connecting part, and the connecting part is used for being connected with the piston in the needle cylinder and driving the piston to move in a first cavity of the fixed part along the first direction. When the fingers of one hand push the sliding piece to move forwards (in the direction departing from the palm of the hand), the piston is driven to move forwards to perform injection; when the fingers of one hand push the sliding piece to move backwards (towards the palm direction), the piston is driven to move forwards to perform injection action.

In the process, the fixing piece and the needle cylinder are kept still, so that the puncture needle is inserted into the cell tissue and kept still, when the puncture outfit performs suction action and injection action, the sliding piece moves along the first direction relative to the fixing piece, and the piston moves along the first direction in the fixing piece and the needle cylinder without influencing the fixing piece. That is, during the puncturing process, the puncture outfit is held by partial fingers and palm of one hand, so that the fixing piece and the needle cylinder are kept still, and the other fingers of one hand operate the sliding piece independently to move. Therefore, an operator can operate the puncture outfit of the invention with one hand to realize suction action or injection action without mutual influence, the suction action is convenient when puncture suction examination is carried out, and the puncture outfit punctures stably.

When the injector frame is arranged in an injector and is in an initial state, the piston is arranged at the bottom of the syringe, fingers of an operator hold the hand-held part, and the palm of the hand is abutted against one end of the fixing piece far away from the syringe, so that the fixing piece and the syringe are kept still, the piston is operated to move backwards firstly, and 1-2ml of air is filled in the syringe; then the puncture outfit is operated to be inserted into the human tissue, and the puncture needle is inserted into the cell tissue to be kept still; then the piston is operated to move backwards (in the palm direction), so that a certain negative pressure exists in the needle cylinder, and the cell tissue can be sucked out; after the cell tissue is sucked out, the cell tissue is pulled out from the human tissue; and dripping the sucked cell tissue on a glass slide, uniformly pushing the glass slide open, fixing the glass slide with 95% alcohol after the glass slide is dried, and then sending for detection.

In order that the foregoing and other objects, features, and advantages of the invention will be readily understood, a preferred embodiment of the invention will be hereinafter described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a first perspective view of a puncture instrument according to an embodiment of the present invention;

FIG. 2 is a second perspective view of the puncture instrument according to the embodiment of the present invention;

FIG. 3 is a third perspective view of the puncture instrument according to the embodiment of the present invention;

FIG. 4 is a first cross-sectional view of a penetrator in accordance with an embodiment of the present invention;

FIG. 5 is a second cross-sectional view of the puncture instrument according to the embodiment of the present invention;

FIG. 6 is a fourth perspective view of the puncture instrument according to the embodiment of the present invention;

fig. 7 is a perspective view of a securing member in a syringe holder according to an embodiment of the present invention;

fig. 8 is a side view of a securing member in a syringe stand according to an embodiment of the present invention;

fig. 9 is a first perspective view of a slider in a syringe stand according to an embodiment of the present invention;

fig. 10 is a top view of a slide in a syringe stand according to an embodiment of the present invention;

fig. 11 is a second perspective view of the sliding member of the syringe holder according to the embodiment of the present invention;

fig. 12 is a perspective view of a syringe stand according to an embodiment of the present invention;

FIG. 13 is a fifth perspective view of a puncture instrument according to an embodiment of the present invention;

FIG. 14 is a sixth perspective view of a puncture instrument according to an embodiment of the present invention;

fig. 15 is a third perspective view of a slider in the syringe stand according to an embodiment of the present invention;

FIG. 16 is a side view of a penetrator in accordance with an embodiment of the present invention;

fig. 17 is a seventh perspective view of the puncture instrument according to the embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1 and 4, the present invention provides a puncture instrument 1, and in the present embodiment, the puncture instrument 1 includes: a syringe and a syringe holder mounted on the syringe. Wherein, the syringe includes: a syringe 10 and a piston 30. The syringe stand comprises a fixed member 20 and a sliding member 40. The cylinder 10 extends in a first direction (shown as an X direction in fig. 1 and 2), the cylinder 10 has a second cavity 11, and a front end 1a of the cylinder 10 is used for arranging a puncture needle (not shown) communicated with the second cavity 11, and the puncture needle is used for puncturing cell tissues to perform cell biopsy, such as puncturing cell tissues of thyroid gland, lymph node, mammary gland and the like.

The fixing member 20 extends along a first direction, the fixing member 20 has a first cavity 23 and a hand-held portion 21, the syringe 10 is inserted into the first cavity 23 and is fixedly connected with the fixing member 20, and the hand-held portion 21 is used for holding the puncture device 1 by an operator.

Referring to fig. 4, the piston 30 has a first end 31 and a second end 32 along a first direction, the piston 30 is at least partially located in the first cavity 23 of the fixing member 20, in this embodiment, the first end 31 of the piston 30 is located in the second cavity 11, the second end 32 extends out of the second cavity 11 and is located in the first cavity 23, and an outer contour of the first end 31 of the piston 30 is attached to an inner circumferential surface of the second cavity 11. The slider 40 is disposed on the fixed member 20 and can slide along a first direction relative to the fixed member 20, the slider 40 has a connecting portion 43, the connecting portion 43 is used for connecting with the piston 30 in the needle cylinder 10, and in the embodiment, the connecting portion 43 is connected with the second end 32 of the piston 30. The sliding member 40, when sliding in a first direction with respect to the fixed member 20, can bring the piston 30 to move in the second cavity 11 of the needle cylinder 10 and in the first cavity 23 of the fixed member 20.

When the fingers of one hand push the sliding part 40 to move forward (in the direction departing from the palm of the hand), the piston 30 is driven to move forward to perform the injection action; when the fingers of one hand push the sliding member 40 to move backward (toward the palm), the piston 30 is driven to move backward, and the suction action is performed.

In the process, the fixed member 20 and the cylinder 10 are kept still, so that the puncture needle is inserted into the cell tissue and kept still, when the puncture instrument 1 performs the suction action and the injection action, the sliding member 40 moves in the first direction relative to the fixed member 20, and the piston 30 moves in the first direction in the fixed member 20 and the cylinder 10 without affecting the fixed member 20. That is, during the puncturing process, the operator holds the puncture instrument 1 with a part of fingers and palm of one hand, so that the fixed member 20 and the needle cylinder 10 are kept stationary, and the other fingers of one hand operate the sliding member 40 independently to move. Therefore, the operator can operate the puncture outfit 1 of the invention with one hand to realize the suction action or the injection action without influencing each other, the suction action is convenient when the puncture suction examination is carried out, and the puncture outfit 1 punctures stably.

When the injector frame is installed on an injector, in an initial state, the piston 30 is arranged at the bottom of the needle cylinder 10, fingers of a single hand of an operator hold the hand-held part, and the palm of the hand is abutted against one end of the fixing piece 20 far away from the needle cylinder 10, so that the fixing piece 20 and the needle cylinder 10 are kept still, the piston 30 is operated firstly to move backwards, and 1-2ml of air is filled in the needle cylinder 10; then the puncture outfit 1 is operated to be inserted into the human tissue, and the puncture needle is inserted into the cell tissue to keep still; then the piston 30 is operated to move backwards (in the palm direction), so that a certain negative pressure exists in the needle cylinder 10, and the cell tissue can be sucked out; after the cell tissue is sucked out, the cell tissue is pulled out from the human tissue; and dripping the sucked cell tissue on a glass slide, uniformly pushing the glass slide open, fixing the glass slide with 95% alcohol after the glass slide is dried, and then sending for detection.

With continued reference to fig. 1-4, the sliding member 40 of the present invention is provided with a toggle piece 40a for toggling the sliding member 40 to slide in a first direction relative to the fixed member 20. In other embodiments, the dial 40a may not be provided, and the sliding member 40 may be directly dialed to slide in the first direction relative to the fixed member 20. The number of the shifting blocks 40a of the present invention is not limited, and in the present embodiment, the sliding member 40 has the first shifting block 41 and the second shifting block 42 arranged at intervals in sequence along the first direction, and in other implementations, other numbers of the shifting blocks, such as one, three, etc., are possible.

Preferably, referring to fig. 13 and 14, a side of the sliding member 40 facing away from the fixed member 20 is provided with a dial 40a, and along a first direction (shown as an X direction in fig. 13 and 14), one end of the dial 40a is a first dial portion 40c, and the other end is a second dial portion 40 b. The number of the paddle 40a is one as shown in fig. 13 and 14. The operator's finger applying force to the first toggle portion 40c or the second toggle portion 40b can toggle the toggle piece 40a to slide the sliding member 40 relative to the fixed member 20 in the first direction. In this embodiment, the first toggle portion 40c and the second toggle portion 40b are arc-shaped, and the surface thereof is provided with a skid-proof member 40f (refer to fig. 16).

It should be noted that the specific shape of the poking sheet 40a is not limited, and the poking sheet can be poked by the operator. Referring to fig. 15, in one embodiment, the paddle 40a is in the shape of a rectangular parallelepiped. Referring to fig. 16, in another embodiment, the paddle 40a has an opening 40 e. Preferably, the opening 40e of the paddle 40a extends through the paddle 40 a. The operator's finger may be placed in the opening 40e of the paddle 40a to apply a force to the paddle 40 a. In other embodiments, the opening 40e does not extend through the dial 40a, so that the fingers of the surgeon can apply force to the dial 40a through the opening 40 e.

Referring to fig. 4 and 13, in the initial state, the first end 31 of the plunger 30 abuts against the bottom of the barrel 10, and the first end 31 of the plunger 30 cannot move further toward the puncture needle in the first direction. The operator holds the hand-held part 21 with partial fingers of one hand, the hand-held part 21 is applied with a force F1 towards the palm, the palm is pressed against one end of the fixing piece 20 far away from the needle cylinder 10, the fixing piece 20 is applied with a force F2 back to the palm, under the action of two opposite forces, the fixing piece 20 and the needle cylinder 10 are kept still, and the puncture needle is inserted into the cell tissue and kept still, so that the operation is stable.

Referring to fig. 5 and 13, when the finger of one hand pulls the dial 40a, in this embodiment, the first dial 41, the slider 40 is moved backward (palm direction, direction B in fig. 5) to drive the piston 30 to move backward, so that 1-2ml of air is contained in the syringe 10, i.e., the first dial 41 is pulled to move away from the puncture needle in the first direction; then the puncture outfit 1 is operated to be inserted into the human tissue, and the puncture needle is inserted into the cell tissue to keep still; then the piston 30 is operated to move backwards (in the palm direction), so that a certain negative pressure exists in the needle cylinder 10, and the cell tissue can be sucked out; after the cell tissue is sucked out, the cell tissue is pulled out from the human tissue; and dripping the sucked cell tissue on a glass slide, uniformly pushing the glass slide open, fixing the glass slide with 95% alcohol after the glass slide is dried, and then sending for detection. When the fingers of one hand push the second pick 42, the sliding member 40 moves forward (away from the palm direction, shown as direction a in fig. 4), and drives the piston 30 to move forward, so as to perform an injection action.

In other embodiments, referring to fig. 13, the above process is performed by dialing the dial 40a so that the slider 40 moves forward or backward.

That is, during the puncturing process, the operator holds the puncturing device 1 with a part of fingers and palm of one hand, so that the fixing member 20 and the syringe 10 are kept still, and the other fingers of one hand independently poke the poking piece 40 a.

In other words, when the operator operates the puncture device 1 of the present invention, the hand-held portion 21 of the puncture device 1 is a first force-bearing point, the end of the fixing member 20 away from the needle cylinder 10 along the first direction is a second force-bearing point, the sliding member 40 is a third force-bearing point, and in this embodiment, the first pulling piece 41 or the second pulling piece 42 is a third force-bearing point. Wherein the first and second force points serve to stabilize the puncture instrument 1 and the third force point serves to drive the piston 30 to move to perform a suction action or an injection action. Therefore, the operator can operate the puncture outfit 1 of the invention with one hand to realize the suction action or the injection action without influencing each other, the suction action is convenient when the puncture suction examination is carried out, and the puncture outfit 1 punctures stably.

Referring to fig. 6 to 8, in the present embodiment, the fixing member 20 has a cylindrical shape, and can be fixed to the cylinder 10 in a nested manner. The first cavity 23 of the fixture 20 may be understood as a space formed by the inner contour of the fixture 20. Preferably, the fixing member 20 has a plate shape, and a space formed by an inner contour of the plate-shaped fixing member is a first cavity of the fixing member. Preferably, the first cavity 23 includes at least an arc-shaped portion, such as a semicircular space, and may further include a circular space; that is, the space formed by the inner contour of the fixing member 20 is the first cavity 23 of the fixing member 20. In this embodiment, the fixing member 20 is provided with a first opening 22 extending along a first direction (shown as the direction X in fig. 7), the first opening 22 exposes the piston 30, and in this embodiment, the first opening 22 exposes the second end 32 of the piston 30. As shown in fig. 4 and 5, the connection portion 43 is disposed toward the first opening 22. The sliding member 40 slides in the first direction, thereby causing the second end 32 of the piston 30 to slide in the first cavity 23.

The position of the connecting portion 43 is not limited, and the connecting portion can be connected to the second end 32 of the piston 30 to drive the piston 30 to move along the first direction. In addition, the connection manner of the connection portion 43 and the second end 32 of the piston 30 is not limited, in this embodiment, the connection portion 43 has a clamping groove, and the second end 32 of the piston 30 is clamped with the clamping groove. In other embodiments, other means are possible, such as a screw connection, a bolt connection, or the like.

With continued reference to fig. 8, in the present embodiment, the first openings 22 are two and are disposed parallel to each other. The number of first openings 22 is not limited, however, and may be, for example, one, or another number. In this embodiment, two first openings 22 are spaced apart as shown in the Y direction in the second directional pattern 8), and the second direction is perpendicular to the first direction. The first openings 22 are symmetrically formed on the cylinder 10, so that the installation is facilitated and the weight can be reduced.

In addition, as shown in fig. 9 to 11, the sliding member 40 is provided with a second opening 45 extending along the first direction, and in the present embodiment, the first pulling piece 41 and the second pulling piece 42 are located at two ends of the second opening 45 along the first direction. In other embodiments, in the present embodiment, the first pulling member 41 and the second pulling member 42 are located at other positions of the sliding member 40, and can be pulled by the operator to move the sliding member 40 relative to the fixed member 20 along the first direction. Referring to fig. 5 to 7, two holding portions 21 are symmetrically disposed on the fixing member 20, wherein one of the holding portions 21 extends out of the second opening 45. In this embodiment, the second opening 45 can move along the first direction relative to the fixing member 20 until the first pulling piece 41 or the second pulling piece 42 abuts against the handle portion 21.

In other embodiments, referring to fig. 13-15, the surface of the slider 40 is not provided with apertures.

The specific position of the hand-held portion 21 is not limited, and it may be held by the operator. In this embodiment, the two handheld portions 21 are disposed on the fixing member 20 at intervals along the second direction (shown in the Y direction in fig. 8), the two handheld portions 21 are symmetrically disposed along a central axis (shown in O in fig. 8) of the puncture instrument 1, and the central axis of the puncture instrument 1 can be understood as the central axis of the fixing member 20 having a cylindrical shape. The handheld portion 21 is two handles symmetrically arranged on the mounting portion, so that the handheld portion is convenient to hold.

In addition, in the present embodiment, when the second opening 45 moves in the first direction relative to the fixed member 20 until the second paddle 42 abuts against the handle 21, the first end 31 of the piston 30 moves to the bottom of the syringe 10. However, the present invention is not limited thereto, and in other embodiments, when the first end 31 of the piston 30 moves to the bottom of the syringe 10 along the first direction, the second opening 45 moves relative to the fixing member 20 along the first direction until the second paddle 42 does not abut against the handle 21, and the handle 21 is spaced apart from the second paddle 42.

In addition, the number of the handholds is not limited, and the handholds can not extend out of the second opening hole.

Referring to fig. 13 to 14, it is preferable that the number of the hand-held portions 21 is one. The side of the fixed part 20 facing away from the sliding part 40 is provided with a handheld part 21. In this embodiment, the hand-held portion 21 of the fixed member 20 and the paddle 40a of the slider 40 are located on the opposite side of the puncture instrument. The specific shape of the handle portion 21 is not limited, in this embodiment, the shape of the handle portion 21 is a ring shape, and in other embodiments, the shape of the handle portion 21 is an arc shape (as shown in fig. 8) or a rectangle, and the handle portion can be held by an operator. In the present embodiment, the hand-held portion 21 has an opening 21 c. The opening 21c of the hand-held portion 21 penetrates the hand-held portion 21, and the hand-held portion 21 is annular as a whole. The operator's fingers can be placed in the opening 21c of the hand-held portion 21 to apply force to the hand-held portion 21. In other embodiments, the opening 21c does not extend through the handle 21, and the finger of the operator can apply a force to the handle 21 through the opening 21 c.

With continued reference to fig. 8, the handgrip 21 has a first portion 21a and a second portion 21b connected, wherein the first portion 21a is disposed perpendicular to the fixing member 20, i.e., the first portion 21a of the handgrip 21 extends in the second direction, the second portion 21b of the handgrip 21 is bent toward the first paddle 41, and the handgrip 21 is arc-shaped. Set up like this, be convenient for the art person and hold puncture ware 1, and can hold stably. The shape of the hand-held portion 21 is not limited, and can be held by the operator. For example, in other embodiments, referring to fig. 12, the handle portion 21 is curved as a whole.

The syringe rack of the present invention is provided with a shift member on the movement path of the slider 40 for reminding the suction amount or the injection amount of the syringe, that is, the suction amount or the injection amount of the puncture instrument 1.

Preferably, referring to fig. 13 to 17, the shift position member includes at least one first shift position member 44a disposed on the sliding member 40 and at least one second shift position member 44b disposed on the fixed member 20, and a stroke of the first shift position member 44a moving against the second shift position member 44b in the first direction is a preset value, and the preset value corresponds to a suction amount or an injection amount of the injector; when the first shift element 44a moves against the second shift element 44b, the sliding element 40 can continue to move in the first direction relative to the fixed element 20 under the action of the external force.

In the present embodiment, the sliding member 40 has a first end 46 and a second end 47 in the circumferential direction (shown in the Z direction in fig. 13 and 14), at least one of the first end 46 and the second end 47 of the sliding member 40 is provided with a first shift member 44a, and in the present embodiment, the first end 46 and the second end 47 of the sliding member 40 are provided with the first shift member 44 a. In other embodiments, the first end 46 and the second end 47 of the slider 40 are provided with the first shift position 44a at one end. The fixed member 20 of the present invention is provided with a second shift member 44b at a portion corresponding to an end portion of the sliding member 40 where the first shift member 44a is mounted, and the first shift member 44a and the second shift member 44b are arranged in the first direction. In this embodiment, the first end 46 and the second end 47 of the sliding member 40 are provided with the first shift member 44a, and correspondingly, the portion of the fixed member 20 corresponding to the first end 46 and the second end 47 of the sliding member 40 is provided with the second shift member 44 b.

When the slider 40 slides in the first direction, a significant resistance is generated when the first gear 44a on the slider 40 hits the second gear 44b on the stationary member 20 to alert the operator that the set aspiration or injection volume has been reached.

Referring to fig. 15 to 17, in the present embodiment, two first shift elements 44a are disposed on the sliding element 40 at intervals along the first direction, and one second shift element 44b is disposed on the fixed element 20. The number of the gear pieces is not limited and is set according to the requirements of the suction volume or the injection volume.

In addition, referring to fig. 9 and 10 in conjunction with fig. 2, in other embodiments, at least one shift member 44 is provided on the sliding member 40, and two shift members 44 are provided at intervals along the first direction, and in other embodiments, other numbers of shift members may be provided. In the first direction, the stroke of the gear 44 moving against the handgrip 21 is a preset value, which corresponds to the aspiration or injection volume of the syringe.

The specific position of the shift element 44 on the sliding element 40 is not limited, in this embodiment, at least one shift element 44 is disposed on the hole wall of the second opening 45 of the sliding element 40, and in this embodiment, two shift elements 44 are disposed at an interval along the first direction. In the present embodiment, the shift position member 44 is a protrusion disposed on the hole wall of the second hole 45. When the sliding member 40 slides in the first direction, the hand-held portion 21 and the second opening 45 slide relative to each other, and when the hand-held portion 21 hits the shift member 44, a significant resistance is generated to remind the operator that the set suction amount or injection amount is reached.

The above-mentioned preset value is not limited, for example, a stroke in which one of the shift members 44 moves against the hand-held portion 21 corresponds to a suction amount of 0.5ml, which is a state of small negative pressure; the other gear 44 is moved to a stroke against the hand-held portion 21 corresponding to a suction amount of 1.5ml, which is a large negative pressure state compared to a small negative pressure state. In other embodiments, the preset value can be set correspondingly according to the requirement.

When the shift position member 44 is moved to abut against the hand-held portion 21, the sliding member 40 can continue to move in the first direction relative to the fixed member 20 by the external force. That is, when the shift position member 44 moves to abut against the hand-held portion 21 and the first paddle 41 or the second paddle 42 continues to be dialed, the slider 40 can continue to move in the first direction relative to the fixed member 20.

In other embodiments, referring to FIG. 12, the fixed member 20 is provided with at least one gear member 44, one gear member 44 being shown in FIG. 12, and other numbers of gear members are possible in other embodiments. In the first direction, the stroke of the slider 40 moving against the gear 44 is a preset value, which corresponds to the aspiration or injection volume of the syringe.

It should be noted that in other embodiments, when the sliding member 40 moves against the shift position member 44, the sliding member 40 can continue to move in the first direction relative to the fixed member 20 under the action of the external force. That is, when the sliding member 40 moves to abut against the shift position member 44, and the sliding member 40 continues to move in the first direction relative to the fixed member 20 when the sliding member 40, for example, the first paddle 41 or the second paddle 42, is pulled.

Referring to fig. 9 and 11, the cross-section of the contact surface of the sliding member 40 of the present invention, which is fitted to the outer surface of the fixed member 20, is an arc-shaped surface. The arc-shaped surface is matched with the outer contour of the fixed part 20 and mutually matched and slides to play a role in guiding. In this embodiment, the arc-shaped surface is a preferred arc surface, that is, the central angle corresponding to the arc-shaped surface is greater than 180 °. This allows the sliding member 40 to be connected to the fixed member 20 without being separated from the fixed member 20, and allows the sliding member 40 and the fixed member 20 to slide relative to each other in the first direction.

In summary, the above-mentioned embodiments are provided only for illustrating the principles and effects of the present invention, and not for limiting the present invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (16)

1. A syringe rack for mounting to a syringe, comprising:

the fixing piece extends along a first direction, the fixing piece is provided with a first cavity and a handheld part, a needle cylinder of the injector is inserted into the first cavity of the fixing piece and is fixedly connected with the fixing piece, and at least part of a piston of the injector is positioned in the first cavity of the fixing piece;

the sliding part is arranged on the fixing part and can slide relative to the fixing part along the first direction, the sliding part is provided with a connecting part, and the connecting part is used for being connected with the piston in the needle cylinder and can drive the piston to move in the first cavity of the fixing part along the first direction.

2. The syringe rack of claim 1, wherein the end of the fixed member distal from the syringe is configured to abut against the palm of the operator's hand, wherein the handle is a first force point, the end of the fixed member distal from the syringe is a second force point along the first direction, and the slider is a third force point.

3. The syringe rack of claim 1 wherein the securing member defines a first opening extending in the first direction, the first opening exposing the piston, the connecting portion being disposed toward the first opening.

4. The syringe rack of claim 1 wherein the sliding member is provided with a dial for dialing the sliding member to slide relative to the fixed member in the first direction.

5. The syringe rack according to claim 4, wherein the side of the sliding member facing away from the fixed member is provided with the poking piece, and in the first direction, one end of the poking piece is a first poking part, and the other end of the poking piece is a second poking part.

6. The syringe rack of claim 5, wherein the paddle has an opening.

7. The syringe rack of claim 1 wherein the side of the stationary member facing away from the sliding member is provided with the hand-held portion.

8. The syringe rack of claim 1 wherein the shape of the hand grip comprises a circle, an arc, or a rectangle.

9. The syringe rack of claim 1, wherein the sliding member has a first paddle and a second paddle that are sequentially spaced apart along the first direction.

10. The syringe rack according to claim 1, wherein a gear member is provided on a movement path of the sliding member for reminding a suction amount or an injection amount of the syringe.

11. The syringe rack according to claim 10, wherein the shift member comprises at least one first shift member disposed on the sliding member and at least one second shift member disposed on the fixed member, and a stroke of the first shift member moving against the second shift member along the first direction is a preset value, and the preset value corresponds to a suction amount or an injection amount of the syringe; when the first gear piece moves to abut against the second gear piece, the sliding piece can continue to move relative to the fixed piece in the first direction under the action of external force.

12. The syringe rack of claim 11 wherein the sliding member has a first end and a second end along the circumferential direction, and at least one of the first end and the second end of the sliding member is provided with the first gear member; and the part of the fixed piece, which corresponds to the end part of the sliding piece provided with the first gear piece, is provided with the second gear piece.

13. The syringe holder of claim 1 wherein the contact surface of the sliding member that engages the outer surface of the fixed member has an arcuate cross-section.

14. The syringe holder of claim 13 wherein the arcuate surface is a preferential arc surface.

15. A puncture instrument, comprising:

a syringe, the syringe comprising:

the needle cylinder extends along the first direction and is provided with a second cavity, and the needle cylinder is used for arranging a puncture needle communicated with the second cavity;

a piston having a first end and a second end along the first direction, the first end being disposed within the second cavity;

the injector frame of any one of claims 1 to 14, wherein the syringe is inserted into the first cavity of the retaining member and is fixedly coupled to the retaining member, and the second end of the plunger extends out of the second cavity and is positioned within the first cavity of the retaining member and coupled to the coupling portion.

16. The puncture instrument of claim 15, wherein the fixing member is provided with a first opening extending in the first direction, the first opening exposing the second end of the piston, the connecting portion being disposed toward the first opening.

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