Sleeve assembly for preventing needle point from being damaged during needle installation of fire needle device

Abstract

The utility model belongs to the technical field of medical equipment, and particularly discloses a sleeve assembly for a fire needle device to prevent a needle tip from being damaged during needle installation, the sleeve assembly comprises a guide sleeve and a push fixing part, the rear side of a fire needle shell is provided with an installation hole, and the push fixing part is installed in the rear side of the fire needle shell and cannot pass through the installation hole; the guide sleeve is located between the electromagnet and the pushing fixing part, one side of the guide sleeve is inserted into the electromagnet and can slide in a center hole in the electromagnet, and the other side of the guide sleeve is turned outwards to form a pushing disc; the two sides of the elastic reset piece abut against the ends of the electromagnet and the push disc respectively; the push disc abuts against one side of the push fixing part. When the fire needle assembly is installed, the fire needle assembly directly reaches the guide sleeve after entering the installation hole, the guide sleeve guides the fire needle assembly, and the fire needle assembly directly enters the electromagnet after leaving the guide sleeve, so that the situation that the fire needle assembly directly touches the end face of the electromagnet, and consequently the tip end of the fire needle assembly is bent and deformed is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment, especially relates to a sleeve assembly for preventing needle tip from being damaged during needle mounting of fire needle device. BACKGROUND

[0002] Fire needle therapy, anciently called "tongue acupuncture", "burning needle", etc., is a method of treating diseases by quickly inserting a red-hot fire needle into the human body, which has the effects of warming meridians, dredging collaterals, dispelling wind and removing cold. Fire needle therapy has been widely used in clinical treatment and constantly updated. The latest automatic fire needle treatment device usually adopts an electromagnet device cooperating with a return spring to perform automatic needle advancing and retreating actions, and an iron rod is matched with the fire needle. The burning needle adopts a more scientific heating pipe form, and the layout mode adopts a coaxial series connection mode in which a shell, a return spring, an electromagnet and a heating pipe are sequentially arranged, and the electromagnet is fixed on the shell.

[0003] The fire needle action assembly is sequentially composed of a needle seat, a needle rod (iron rod) and a needle tool. The fire needle action assembly is usually sequentially inserted into the through holes of the shell, the return spring, the electromagnet and the heating pipe, and is coaxial with the return spring, the electromagnet and the heating pipe, and the return spring is located between the shell and the electromagnet.

[0004] The installation and dismounting mode of the fire needle action assembly adopts a rear insertion mode, that is, the installation hole on the shell sequentially passes through the return spring, the electromagnet, the heating pipe and the like. The needle tool at the front end of the fire needle action assembly can be replaced. This mode is adopted because the current heating technical solution is limited. The use of an advanced heating pipe to heat the fire needle tool is itself a technical progress, but in order to improve the heating efficiency and the positioning accuracy of fire needle treatment, the inner core diameter of the heating pipe must be small, and the diameter of the fire needle tool is not more than 1 mm. The inner core diameter of the commonly used heating pipe is not more than 2 mm, which leads to the fact that it is impossible to install from the skin contact end, and only the rear needle mounting mode can be adopted.

[0005] There is an axial space between the shell and the electromagnet, and the return spring is placed in the space. The axial length of the space is the maximum needle insertion depth of fire needle treatment plus a safety action protection length, for example, the prior art with the application number 202011641141.3.

[0006] When the fire needle action assembly is installed on the fire needle device, since there is an axial space between the shell installation hole and the electromagnet, the space cannot provide a guide channel for the needle tool, which causes the needle tip of the needle tool at the front end of the fire needle action assembly to easily poke the end face of the electromagnet during installation, resulting in bending and deformation of the needle tip of the fire needle tool. In a slight case, the treatment effect is affected, and in a serious case, the equipment is damaged, the patient is harmed, etc. INVENTION CONTENTS

[0007] The utility model discloses a purpose lies in providing a kind of sleeve assembly for preventing needle tip from being damaged when needle is installed for fire needle device, let needle tool enter device have the direct guidance of guide sleeve, eliminate the trouble and problem encountered by the rear needle of current popular fire needle device.

[0008] In order to achieve the above object, the technical scheme of the utility model is as follows: a sleeve assembly for preventing needle tip from being damaged when needle is installed for fire needle device, including guide sleeve and push fixed part, the rear side of fire needle shell is equipped with the mounting hole for passing through fire needle assembly, the push fixed part is installed in the rear side inside of the fire needle shell and cannot pass through the mounting hole;The guide sleeve is located between electromagnet and push fixed part, one side of the guide sleeve is inserted into the inside of the electromagnet and can slide in the center hole inside electromagnet, the other side of the guide sleeve is outwardly flanged to form push disc;Elastic reset piece is located between electromagnet and push disc and the end of both sides is respectively abutted;The push disc is abutted with one side of the push fixed part under the elastic force of elastic reset piece;

[0009] The push fixed part is slidably connected in the fire needle shell, and the sliding direction is consistent with the needle insertion direction of fire needle assembly;The center of the push fixed part is provided with a through hole for passing through the fire needle assembly, and the needle seat of the fire needle assembly cannot pass through the through hole;The fire needle assembly and the push fixed part are detachably connected;The center axes of the through hole of the push fixed part, the center hole of the guide sleeve and the center hole inside the electromagnet coincide;When the fire needle assembly and the push fixed part are fixed and not subjected to external force, the needle tip of the fire needle assembly is located inside the fire needle shell.

[0010] Further, the push fixed part includes outer sliding block, inner sliding block and limiting spring sheet;The outer sliding block and the inner sliding block are arranged along the axial direction, and the outer sliding block is located on the side close to the mounting hole, and the inner sliding block and the outer sliding block are fixed by the fixing piece;

[0011] The two sides of needle rod are symmetrically provided with clamping columns, and the two sides of the through hole of the outer sliding block are provided with sliding grooves corresponding to the clamping columns;The side of the outer sliding block close to the inner sliding block is provided with a transition surface for sliding of the clamping column, and the side of the transition surface is provided with a mounting groove, and one limiting spring sheet is mounted in each mounting groove;The clamping column can slide into the mounting groove through the sliding groove and the transition surface to press the limiting spring sheet, and the clamping column and the limiting spring sheet are fixed by cooperation.

[0012] Further, the outer periphery of the outer sliding block is provided with a guide block, the fire needle shell is provided with a guide groove, and the guide direction of the guide groove is parallel to the needle insertion direction of the fire needle;The guide block is slidably connected in the guide groove.

[0013] Further, the elastic reset piece adopts a reset spring.

[0014] Further, the reset spring is in a circular tower structure, and the small-diameter end is larger than the outer diameter of the guide sleeve; the reset spring is located outside the guide sleeve and is coaxially arranged with the guide sleeve; the small-diameter end of the reset spring abuts against the push disc, and the other end abuts against the end face of the electromagnet.

[0015] Further, the limiting spring sheet is a sheet-shaped spring sheet.

[0016] Further, the outer sliding block is further provided with a blocking surface for preventing the clamping column from sliding on the side close to the inner sliding block, and the blocking surface and the transition surface are located on the two sides of the mounting groove, respectively.

[0017] The working principle of the technical solution is that the fire needle assembly passes through the mounting hole on the fire needle shell, and in the moving process, the direction of the fire needle assembly needs to be adjusted, so that the clamping column on the fire needle assembly corresponds to the sliding groove, and the clamping column slides into the sliding groove. After the clamping column collides with the end face of the inner sliding block, the needle seat is rotated, the needle seat drives the clamping column to rotate, so that the clamping column passes through the transition surface, and the clamping column extrudes the limiting spring sheet in the mounting groove, enters the mounting groove, and the needle assembly is assembled.

[0018] When working, the fire needle assembly drives the sleeve assembly (including the guide sleeve and the push fixed part) to advance under the action of the electromagnet. Since the large-diameter end of the elastic reset member is limited by the position of the end face of the electromagnet, it cannot move together. The push disc on the guide sleeve pushes the small-diameter end of the elastic reset member to move together, and the elastic reset member is compressed. When the electromagnet is turned off, the elastic reset member drives the fire needle assembly and the sleeve assembly to reset, completing a working cycle.

[0019] The technical solution has the following beneficial effects:

[0020] ①When the fire needle assembly is installed, it directly reaches the guide sleeve after entering the mounting hole. The guide sleeve guides the fire needle assembly, and after leaving the guide sleeve, it directly enters the inside of the electromagnet, avoiding the situation that the tip of the fire needle assembly is bent and deformed by directly colliding with the end face of the electromagnet.

[0021] ②By setting the clamping column on the needle rod, the sliding groove, the transition surface and the mounting groove on the outer sliding block, and setting the limiting spring sheet in the mounting groove, the clamping column slides into the sliding groove, the fire needle assembly is rotated to make the clamping column enter the transition surface, the fire needle assembly is continuously rotated, the clamping column extrudes the limiting spring sheet and enters the mounting groove, and the clamping column and the limiting spring sheet cooperate to fix the clamping column, thereby fixing the fire needle assembly and the push fixed part. When disassembling, the fire needle assembly is rotated in the opposite direction, so that the clamping column enters the transition surface from the mounting groove and then enters the sliding groove. At this time, the fire needle assembly has been separated from the push fixed part, and the fire needle assembly can be taken out by pulling it outward through the needle seat of the fire needle assembly. The installation and disassembly of the entire fire needle assembly are very simple. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Figure 3 is a schematic view of the connection of the sleeve assembly and the fire needle shell;

[0023] Figure 2 Figure 4 is a schematic view of the structure when the sleeve assembly and the fire needle shell are separated;

[0024] Figure 3 Figure 5 is an exploded view of Figure 2 ;

[0025] Figure 4 Figure 6 is an exploded view of the sleeve assembly;

[0026] Figure 5 Figure 7 is a schematic view of the outer sliding block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings:

[0028] The reference signs in the accompanying drawings of the specification include: fire needle shell 1, push fixed part 2, electromagnet 3, elastic reset part 4, guide sleeve 5, mounting hole 6, fire needle assembly 7, needle seat 8, needle rod 9, clamping column 10, outer sliding block 11, inner sliding block 12, limiting elastic sheet 13, fixing part 14, push disc 15, guide block 16, threaded hole 17, through hole 18, sliding groove 19, transition surface 20, mounting groove 21, blocking surface 22.

[0029] The technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings:

[0030] The embodiments are basically as shown in the accompanying drawings: Figures 1-5 A sleeve assembly for preventing damage to the needle tip when the fire needle is assembled, comprising a guide sleeve 5 and a push fixed part 2, the rear side of the fire needle shell 1 is provided with a mounting hole 6 for passing through the fire needle assembly 7, and the push fixed part 2 is installed inside the rear side of the fire needle shell 1 and cannot pass through the mounting hole 6. The guide sleeve 5 is located between the electromagnet 3 and the push fixed part 2, one side of the guide sleeve 5 is inserted into the inside of the electromagnet 3 and can slide in the center hole inside the electromagnet 3, and the other side of the guide sleeve 5 is outwardly flanged to form a push disc 15. The elastic reset part 4 is located between the electromagnet 3 and the push disc 15 and abuts against the end parts of the two respectively; the push disc 15 abuts against one side of the push fixed part 2 under the elastic force of the elastic reset part 4, and the axial length of the elastic reset part 14 when not under force is greater than the distance between the electromagnet 3 and the push fixed part 2.

[0031] The pushing fixed part 2 is slidingly connected in the fire needle shell 1, and the sliding direction is consistent with the needle insertion direction of the fire needle assembly 7; the center of the pushing fixed part 2 is provided with a through hole 18 for passing through the fire needle assembly 7, and the needle seat 8 of the fire needle assembly 7 cannot pass through the through hole 18. The pushing fixed part 2 comprises an outer sliding block 11, an inner sliding block 12 and a limiting elastic sheet 13 (specifically a sheet-shaped elastic sheet); the outer sliding block 11 and the inner sliding block 12 are arranged in the axial direction, and the outer sliding block 11 is located on the side close to the mounting hole 6; the inner sliding block 12 and the outer sliding block 11 are fixed through a fixing piece 14; specifically, the inner sliding block 12 and the outer sliding block 11 are provided with threaded holes 17 correspondingly, and the fixing piece 14 adopts a threaded piece (such as a bolt) to cooperate with the threaded holes 17 to realize the fixing of the inner sliding block 12 and the outer sliding block 11. The outer periphery of the outer sliding block 11 is provided with two groups of guide blocks 16, and the fire needle shell 1 is provided with two groups of guide grooves, and the guide direction of the guide grooves is parallel to the needle insertion direction of the fire needle; the guide blocks 16 are slidingly connected in the guide grooves.

[0032] The fire needle assembly 7 and the pushing fixed part 2 are detachably connected; specifically, the two sides of the needle rod 9 are symmetrically provided with clamping columns 10, and the two sides of the through hole 18 of the outer sliding block 11 are provided with sliding grooves 19 corresponding to the clamping columns 10; the side of the outer sliding block 11 close to the inner sliding block 12 is provided with a transition surface 20 for sliding of the clamping column 10 and a blocking surface 22 for preventing sliding of the clamping column 10; the two sides of the transition surface 20 are connected with the sliding grooves 19 and mounting grooves 21 respectively, and the blocking surface 22 and the transition surface 20 are located on the two sides of the mounting groove 21 respectively. One limiting elastic sheet 13 is mounted in each mounting groove 21; the clamping column 10 can slide into the mounting groove 21 through the sliding groove 19 and the transition surface 20 to press the limiting elastic sheet 13, and is fixed in cooperation with the limiting elastic sheet 13. The elastic reset piece 4 adopts a reset spring, which is in a circular tower structure, and the small-diameter end is larger than the outer diameter of the guide sleeve 5; the reset spring is located outside the guide sleeve 5 and is coaxially arranged with the guide sleeve 5; the small-diameter end of the reset spring abuts against the push disc 15, and the other end abuts against the end face of the electromagnet 3.

[0033] The center axes of the through hole 18 of the pushing fixed part 2, the center hole of the guide sleeve 5 and the center hole in the electromagnet 3 coincide; under the condition that the fire needle assembly 7 and the pushing fixed part 2 are fixed and not subjected to external force, the needle tip of the fire needle assembly 7 is located inside the fire needle shell 1.

[0034] The specific implementation process is as follows:

[0035] The fire needle assembly 7 passes through the mounting hole 6 on the fire needle shell 1; in the moving process of the fire needle assembly 7, the direction of the fire needle assembly 7 needs to be adjusted, so that the clamping column 10 on the fire needle assembly 7 corresponds to the sliding groove 19, and the clamping column 10 slides into the sliding groove 19. After the clamping column 10 collides with the end face of the inner sliding block 12, the needle seat 8 is rotated, the clamping column 10 is rotated by the needle seat 8, the clamping column 10 passes through the transition surface 20, presses the limiting elastic sheet 13 in the mounting groove 21, enters the mounting groove 21, and the needle assembly is completed.

[0036] When working, the fire needle assembly 7 drives the sleeve assembly (including the guide sleeve 5 and the pushing fixed part 2) to advance under the action of the electromagnet 3, and the large-diameter end of the elastic return member 4 cannot move together due to the restriction of the end surface position of the electromagnet 3. The pushing disc 15 on the guide sleeve pushes the small-diameter end of the elastic return member 4 to move together, and the elastic return member 4 is compressed. When the electromagnet 3 is turned off, the elastic return member 4 drives the fire needle assembly 7 and the sleeve assembly to reset, completing a working cycle.

[0037] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0038] The above is only the embodiment of the present application, and the common knowledge of specific structures and properties in the scheme is not described in detail, the ordinary skilled in the art knows all the ordinary technical knowledge in the technical field of the present application before the filing date or the priority date, can know all the prior art in the field and has the ability to apply the conventional experimental means before the date, the ordinary skilled in the art can improve and implement the present scheme under the inspiration of the present application combined with their own ability, some typical known structures or known methods should not be an obstacle for the ordinary skilled in the art to implement the present application. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be regarded as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A sleeve assembly for preventing needle tip damage during needle loading in a fire needle device, characterized in that: The assembly includes a guide sleeve (5) and a push fixing part (2). The rear side of the fire needle housing (1) is provided with a mounting hole (6) for the fire needle assembly (7) to pass through. The push fixing part (2) is installed inside the rear side of the fire needle housing (1) and cannot pass through the mounting hole (6). The guide sleeve (5) is located between the electromagnet (3) and the push fixing part (2). One side of the guide sleeve (5) is inserted into the interior of the electromagnet (3) and can slide in the central hole inside the electromagnet (3). The other side of the guide sleeve (5) is turned outward to form a push plate (15). The elastic reset member (4) is located between the electromagnet (3) and the push plate (15) and its two sides abut against the ends of both of them respectively. The push plate (15) abuts against one side of the push fixing part (2) under the elastic force of the elastic reset member (4). The pushing and fixing part (2) is slidably connected inside the fire needle housing (1), and the sliding direction is consistent with the needle insertion direction of the fire needle assembly (7); the center of the pushing and fixing part (2) is provided with a through hole (18) for the fire needle assembly (7) to pass through, and the needle seat (8) of the fire needle assembly (7) cannot pass through the through hole (18); the fire needle assembly (7) and the pushing and fixing part (2) are detachably connected; the central axes of the through hole (18) of the pushing and fixing part (2), the central hole of the guide sleeve (5) and the central hole inside the electromagnet (3) are coincident; when the fire needle assembly (7) is fixed to the pushing and fixing part (2) and is not subjected to external force, the needle tip of the fire needle assembly (7) is located inside the fire needle housing (1).

2. A sleeve assembly for preventing needle tip damage during needle loading in a fire needle device according to claim 1, characterized in that: The pushing and fixing part (2) includes an outer slider (11), an inner slider (12) and a limiting spring (13); the outer slider (11) and the inner slider (12) are arranged axially and the outer slider (11) is located on the side close to the mounting hole (6), and the inner slider (12) and the outer slider (11) are fixed together by a fastener (14); The needle bar (9) is symmetrically provided with locking pins (10) on both sides. The outer slider (11) has sliding grooves (19) on both sides of the through hole (18) corresponding to the locking pins (10). The outer slider (11) has a transition surface (20) on the side near the inner slider (12) for the locking pins (10) to slide. The two sides of the transition surface (20) are respectively connected to the sliding groove (19) and the mounting groove (21). A limiting spring (13) is installed in each mounting groove (21). The locking pin (10) can slide into the mounting groove (21) through the sliding groove (19) and the transition surface (20) to squeeze the limiting spring (13) and cooperate with the limiting spring (13) to achieve fixation.

3. A sleeve assembly for preventing needle tip damage during needle loading in a fire needle device according to claim 2, characterized in that: The outer slider (11) is provided with a guide block (16) on its outer periphery, and the fire needle housing (1) is provided with a guide groove. The guiding direction of the guide groove is parallel to the insertion direction of the fire needle. The guide block (16) is slidably connected in the guide groove.

4. A sleeve assembly for preventing needle tip damage during needle loading in a fire needle device according to claim 1, characterized in that: The elastic reset component (4) is a reset spring.

5. A sleeve assembly for preventing needle tip damage during needle loading in a fire needle device according to claim 4, characterized in that: The reset spring has a circular tower-shaped structure, with the smaller diameter end being larger than the outer diameter of the guide sleeve (5); the reset spring is located outside the guide sleeve (5) and is coaxially arranged with the guide sleeve (5); the smaller diameter end of the reset spring abuts against the push plate (15), and the other end abuts against the end face of the electromagnet (3).

6. A sleeve assembly for preventing needle tip damage during needle loading in a fire needle device according to claim 2, characterized in that: The limiting spring (13) is a sheet-shaped spring.

7. A sleeve assembly for preventing needle tip damage during needle loading in a fire needle device according to claim 2, characterized in that: The outer slider (11) is also provided with a blocking surface (22) on the side near the inner slider (12) to prevent the pin (10) from sliding. The blocking surface (22) and the transition surface (20) are located on both sides of the mounting groove (21).

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