Portable disposable self-rescue rapid hemostasis device

Abstract

A portable disposable self-rescue rapid hemostasis device comprises an injection tube (1), a piston (3) and a piston rod (4), and is characterized in that the piston rod (4) is cylindrical, a telescopic rod (5) is arranged in the piston rod (4), the tail end of the piston rod (4) is fixedly connected with the injection tube (1) through a fixing sleeve (6) at the tail end of the injection tube (1), and the telescopic rod (5) is slidably arranged in the piston rod (4); besides, a locking element (7) is arranged on the tail portion of the piston rod (4), a locked element matched with the locking element (7) of the piston rod (4) is arranged on the head portion of the telescopic rod (5), and the locking element (7) and the locked element are mutually combined and locked. The device is small in appearance size, easy to operate and convenient to carry and use by a single soldier.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical apparatus and instruments, and particularly relates to a portable disposable self-help rapid hemostasis device. BACKGROUND

[0002] The existing portable rapid hemostasis device pre-stores compressed sponge-like particles in a special syringe. The compressed sponge-like particles are injected into a wound through the special syringe, and the compressed sponge-like particles absorb blood and expand rapidly at the wound to achieve the effect of rapid hemostasis. The main technical difficulty of the existing portable rapid hemostasis syringe is that the hemostasis injection rod is axially extended out of the injection rod, resulting in a long finished product, occupying a large space, and being inconvenient to carry.

[0003] The utility model (authorization announcement number CN221512018U; announcement date 2014.08.13; application number 202321881407.0) discloses a portable rapid hemostasis syringe with a foldable piston rod. The device comprises a syringe, a piston and a piston rod. The head of the syringe is provided with a closed film cover, and the film cover is provided with a pre-fracture that is easy to break under external force. The tail of the syringe is provided with a piston, and the middle of the syringe is provided with a compressed sponge pill. When the piston is forced to move from the tail to the head of the syringe, the compressed sponge pill breaks the closed film cover, flows out of the head of the syringe and enters the bleeding site. Its characteristics are that the connection between the piston rod and the piston is a rotating connection. According to the structure characteristics of the utility model patent, the piston rod is rotatably connected to the piston at the top. However, the connection lacks stable support. When the piston rod is pushed down to extrude the piston instantaneously, it is easy to cause jamming or fracture, and it is difficult to release the hemostatic pill with one hand for self-help hemostasis. At the same time, the piston rod body of the hemostasis syringe of this structure is placed on the outside of the syringe after being rotated and folded, which increases the overall size (circumferential size) of the hemostasis syringe and changes the appearance shape of the syringe. The increase in the overall size makes it inconvenient to carry, and the change in the appearance shape increases the packaging cost of the product. In addition, the piston rod of the existing technology needs to be folded and turned over. When it is turned over, the folded piston rod applies a lateral force to the piston, which easily causes the piston to deform and move out of place, resulting in inconvenient operation.

[0004] Therefore, there is an urgent need in the market to develop a portable hemostasis syringe that is easy to operate by a single soldier, small in size and can reduce the manufacturing cost of the product, in order to overcome the problems of the existing portable rapid hemostasis syringe. UTILITY MODEL CONTENTS

[0005] The utility model discloses a portable disposable self-help rapid hemostasis device.

[0006] The utility model aims to be implemented by the following technical means:

[0007] A portable disposable self-help rapid hemostatic device, the device comprises an injection tube 1, a piston 3 and a piston rod 4, the head of the injection tube 1 is provided with a closed film cover 2, the film cover is provided with a pre-fracture which is easy to break under external force, the tail of the injection tube 1 is provided with the piston 3, the middle of the injection tube 1 is internally provided with a sponge patch 8, when the piston 3 is forced to move from the tail to the head of the injection tube 1, the sponge patch 8 breaks the closed film cover and releases the head of the injection tube 1 into the bleeding site; characterized in that:

[0008] The piston rod 4 is cylindrical, an extension rod 5 is arranged in the piston rod 4, the tail end of the piston rod 4 is fixedly connected with the tail end of the injection tube 1 through a fixing sleeve 6, and the extension rod 5 is slidably arranged in the piston rod 4; a locking element 7 is arranged at the tail of the piston rod 4, and a locked element is arranged at the head of the extension rod 5 and matched with the locking element 7 of the piston rod 4, and the locking element 7 and the locked element are combined and locked with each other.

[0009] Preferably, the tail of the piston rod 4 is provided with at least one locking element, and each locking element comprises a spring 71, a guide sleeve 72 and a locking pin 73; one end of the guide sleeve 72 is fixed on the inner wall of the piston rod 4 and faces the center line of the piston rod 4, and the locking pin 73 is located in the guide sleeve 72 and protrudes out of the guide sleeve 72 at the end facing the center line of the piston rod 4, and the spring 71 is arranged between the locking pin 73 and the inner wall of the piston rod 4.

[0010] At least one lock hole 74 is arranged on the outer peripheral surface of the front end of the extension rod 5, and the lock hole 74 is matched with the shape and size of the locking pin 73 for insertion.

[0011] Preferably, the tail of the piston rod 4 is provided with two or more locking elements, and two or more lock holes 74 are arranged on the outer peripheral surface of the front end of the extension rod 5, and the shape and size of each lock hole 74 are matched with the insertion of each corresponding locking pin 73.

[0012] Preferably, the piston 3 is fixedly connected with the front end surface of the piston rod 4.

[0013] Preferably, the longitudinal length of the extension rod 5 is greater than the longitudinal length of the piston rod 4.

[0014] Preferably, the outer peripheral surface of the extension rod 5 is provided with a guide groove, and a guide boss is arranged on the inner peripheral surface of the piston rod 4, and the guide boss longitudinally slides in the guide groove.

[0015] Preferably, the outer peripheral surface of the extension rod 5 is provided with a guide boss, and a guide groove is arranged on the inner peripheral surface of the piston rod 4, and the guide boss longitudinally slides in the guide groove.

[0016] Compared with the prior art, the portable disposable self-help rapid hemostasis device has the following advantages:

[0017] 1、The portable disposable self-help rapid hemostasis device of the utility model, when using, only need to stretch the telescopic rod 5 back to ensure the combination of the telescopic rod 5 and the piston rod 4 and fix, do not apply pressure to the piston 3, simple operation, avoid the defects of single soldier operation inconvenience of the prior art rapid hemostat.

[0018] 2、The utility model discloses the small size, avoid the defect of the prior art rapid hemostat circumferential size increase.

[0019] 3、Avoid product circumferential (cross section) special shape, reduce the difficulty of product outer package.

[0020] 4、In actual use, the utility model product is stored in the slender pocket, because the product circumferential (cross section) is same, especially when being cylindrical, it is relatively smooth to draw out from the pocket, convenient for single soldier to carry and use. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the state schematic view of telescopic rod and piston rod in the first position of the utility model;

[0022] Figure 2 It is the state schematic view of telescopic rod and piston rod in the second position of the utility model; Figure 1 A partial enlarged view of place A;

[0023] Figure 3 It is the state schematic view of telescopic rod and piston rod in the third position of the utility model.

[0024] Figure 4 It is the state schematic view of telescopic rod and piston rod in the third position of the utility model. Figure 3 B partial enlarged view of place B; Figure 5 B partial enlarged view of place B;

[0025] Figure 5 It is the state schematic view of telescopic rod and piston rod in the third position of the utility model.

[0026] In the drawings:

[0027] 1-injection tube;

[0028] 2-closed film cover;

[0029] 3-piston;

[0030] 4-piston rod;

[0031] 5-telescopic rod, 51-handle;

[0032] 6-fixed sleeve, 61-stop pad, 62-stop cover;

[0033] 7-locking element, 71-spring, 72-guide sleeve, 73-lock pin, 74-lock hole;

[0034] 8-Sponge bonding sheet. Detailed Implementation

[0035] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. To facilitate understanding of the present invention, the orientations mentioned in the specification are explained as follows: In this specification, "lateral" or "circumferential" refers to a direction perpendicular to the central axis of the injection tube 1, and "longitudinal" refers to a direction consistent with the central axis of the injection tube 1. The sponge patch outlet of the injection tube 1 is the head or front part, located on the right side in the figure, and the other end of the injection tube 1 is the tail or rear end, located on the left side in the figure. Similarly, the piston rod and piston connection end is the head or front part, and the other end of the piston rod is the tail or rear end. When the piston moves towards the sponge patch outlet of the injection tube, it moves forward; conversely, it moves backward. "First position" indicates that both the telescopic rod and the piston rod are at the tail of the piston, and the telescopic rod is retracted inside the piston rod. "Second position" indicates that the telescopic rod is pulled back to its furthest distance, and the telescopic rod and piston rod are tightly connected. "Third position" indicates that the telescopic rod and piston rod push the piston forward in the injection tube to the position closest to the injection tube outlet.

[0036] like Figures 1-5 As shown, a portable, disposable self-rescue rapid hemostasis device includes an injection tube 1, a piston 3, and a piston rod 4. The head of the injection tube 1 is equipped with a sealing membrane cap 2, which has pre-fractured grooves to facilitate rupture under external force. The tail of the injection tube 1 is equipped with the piston 3. A sponge adhesive sheet is installed inside the middle of the injection tube 1. When the piston 3 is subjected to force and the injection tube 1 moves from the tail to the head, the sponge adhesive sheet breaks through the sealing membrane cap, releasing the head of the injection tube 1 to enter the wound site. The device is characterized by:

[0037] The piston rod 4 is cylindrical, and a telescopic rod 5 is provided inside the piston rod 4. The tail end of the piston rod 4 is fixedly connected to the tail end of the injection tube 1 through a fixing sleeve 6. The telescopic rod 5 is slidably disposed in the piston rod 4. At least one locking element 7 is provided at the tail end of the piston rod 4, and at least one locked element is provided at the head end of the telescopic rod 5, which cooperates with the locking element 7 of the piston rod 4. The locking element 7 and the locked element are combined with each other to achieve locking.

[0038] In one embodiment, the tail end of the fixing sleeve 6 is provided with a stop pad 61, which is fixed to the fixing sleeve 6. The stop pad 61 has a through hole in the middle, the diameter of which is larger than the diameter of the telescopic rod 5 but smaller than the diameter of the piston rod 4. The telescopic rod 5 passes through the through hole in the middle of the stop pad 61. Since the diameter of the stop pad 61 is larger than the diameter of the piston rod 4, the piston rod 4 cannot pass through the stop pad 61 and is restricted in front of the stop pad 61. In this embodiment, the stop pad 61 is directly fixed to the fixing sleeve 6.

[0039] In another embodiment, a stop cover 62 is provided behind the stop pad 61, and the stop cover 62 is fixedly connected with the fixing sleeve 6, and the fixing sleeve 6 is fixedly connected with the injection tube 1, thereby forming a stable integral structure.

[0040] As shown in Figure 1 and Figure 2 , the telescopic rod and the piston rod are in the first position, and the locking element at the tail of the piston rod 4 comprises a spring 71, a guide sleeve 72 and a locking pin 73, wherein one end of the guide sleeve 72 is fixed on the inner wall of the piston rod 4 and faces the center line of the piston rod 4, the locking pin 73 is located in the guide sleeve 72 and protrudes from the guide sleeve 72 towards the end of the center line of the piston rod 4, and the spring 71 is arranged between the locking pin 73 and the inner wall of the piston rod 4.

[0041] At least one locking hole 74 is arranged on the outer circumferential surface of the front end of the telescopic rod 5, and the locking hole 74 is suitable in shape and size for the insertion of the locking pin 73.

[0042] As shown in Figure 3 and Figure 4 , the telescopic rod and the piston rod are in the second position. The spring 71 exerts pressure on the locking pin 73, and the locking pin 73 abuts against the outer wall of the telescopic rod 5. When the handle 51 of the telescopic rod 5 is pulled in the tail direction by an external force, the telescopic rod 5 moves backward, and the locking hole 74 arranged at the front of the telescopic rod 5 also moves in the tail direction. When the locking hole 74 moves to the position of the locking pin 73, the locking pin 73 enters the locking hole 74 under the pushing force of the spring 71. Figure 4 For Figure 3 B and Figure 5 B are partial enlarged views, which show the state of mutual clamping or locking of the telescopic rod and the piston rod, and the locking position B of the telescopic rod and the piston rod is located at the tail position in the injection tube 1.

[0043] In other embodiments, the spring 71 can also be made of other materials or objects with elasticity, such as a spring sheet.

[0044] In another embodiment, the tail of the piston rod 4 is provided with two locking elements, and the two locking elements are in an axisymmetric position. Similarly, two locking holes 74 are arranged on the outer circumferential surface of the front end of the telescopic rod 5, and the two locking holes 74 are also in an axisymmetric position, and the locking hole 74 is suitable in shape and size for the insertion of each corresponding locking pin 73.

[0045] The tail of the piston rod 4 is provided with three locking elements 7, and the three locking elements 7 are uniformly distributed in the circumferential direction of the piston rod 4. Three locking holes 74 are arranged on the outer circumferential surface of the front end of the telescopic rod 5, and the three locking holes 74 are uniformly distributed in the circumferential direction of the telescopic rod 5, and the three locking pins 73 are respectively inserted into the three locking holes 74.

[0046] Preferably, the piston 3 is fixedly connected to the front end face of the piston rod 4. When the piston rod 4 and the piston 3 are integrated, it ensures that the piston rod 4 can only move back and forth, thus preventing the head of the piston rod 4 from shaking.

[0047] Preferably, the longitudinal length of the telescopic rod 5 is greater than the longitudinal length of the piston rod 4.

[0048] Preferably, the outer peripheral surface of the telescopic rod 5 is provided with a guide groove, and the inner peripheral surface of the piston rod 4 is provided with a guide boss, which slides longitudinally within the guide groove.

[0049] Preferably, the outer circumferential surface of the telescopic rod 5 is provided with a guide boss, and the inner circumferential surface of the piston rod 4 is provided with a guide groove, within which the guide boss slides longitudinally. This structure of guide groove and guide boss is relatively common, and its specific mechanism will not be described in detail here. The function of the guide groove and guide boss is to prevent axial rotation between the telescopic rod 5 and the piston rod 4, ensuring that the telescopic rod 5 and the piston rod 4 can only slide axially.

[0050] like Figure 5 As shown, the telescopic rod and piston rod are in the third position. The telescopic rod 5 and piston rod 4 are locked together by the locking element 7 and the locked element. When the handle 51 of the telescopic rod 5 is pushed forward, the piston 3 is driven to move towards the head of the injection tube 1. The piston 3 squeezes the sponge patch 8 that is pre-stored in the injection tube 1. The sponge patch 8 moves to the pre-set sealing membrane cover 2 at the head of the injection tube 1. The membrane cover has pre-cracked cracks and is easy to break under external force. The sponge patch 8 breaks through the sealing membrane cover and releases the head of the injection tube 1 to enter the bleeding site. Figure 5 The image shows the position of the telescopic rod and piston rod locking part B when the piston 3 moves to the front end inside the injection tube 1, that is, approximately in the middle of the injection tube 1.

[0051] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any modifications, equivalent substitutions and improvements made by those skilled in the art within the technical scope disclosed in this utility model, and within the spirit and principles of this utility model, should be included within the protection scope of this utility model.

Claims

1. A portable disposable self-rescue rapid hemostatic device, comprising an injection tube (1), a piston (3) and a piston rod (4), the head of the injection tube (1) is provided with a closed film cover (2) provided with a pre-fracture which is easy to break under external force, the tail of the injection tube (1) is provided with the piston (3), and the middle of the injection tube (1) is internally provided with a sponge patch (8), when the piston (3) is forced to move from the tail to the head of the injection tube (1), the sponge patch (8) breaks the closed film cover to release the head of the injection tube (1) into the bleeding part of the wound; characterized in that: the piston rod (4) is cylindrical, an extension rod (5) is arranged in the piston rod (4), the tail end of the piston rod (4) is fixedly connected with the tail end of the injection tube (1) through a fixing sleeve (6), and the extension rod (5) is slidably arranged in the piston rod (4); at least one locking element (7) is arranged at the tail of the piston rod (4), and at least one locked element is arranged at the head of the extension rod (5) and matched with the locking element (7) of the piston rod (4), and the locking element (7) and the locked element are combined with each other to realize locking; the locking element at the tail of the piston rod (4) comprises a spring (71), a guide sleeve (72) and a lock pin (73), one end of the guide sleeve (72) is fixed on the inner wall of the piston rod (4) and faces the center line of the piston rod (4), the lock pin (73) is located in the guide sleeve (72) and extends out of the guide sleeve (72) towards one end of the center line of the piston rod (4), and the spring (71) is arranged between the lock pin (73) and the inner wall of the piston rod (4); at least one lock hole (74) is arranged on the outer peripheral surface of the front end of the extension rod (5), and the shape and size of the lock hole (74) are suitable for the insertion of the lock pin (73).

2. The portable disposable self-rescue rapid hemostatic device according to claim 1, wherein: two or more locking elements are arranged at the tail of the piston rod (4), and two or more lock holes (74) are arranged on the outer peripheral surface of the front end of the extension rod (5), and the shape and size of each lock hole (74) are suitable for the insertion of each corresponding lock pin (73).

3. The portable disposable self-rescue rapid hemostatic device according to claim 1, wherein: the piston (3) is fixedly connected with the front end surface of the piston rod (4).

4. The portable disposable self-rescue rapid hemostatic device according to claim 1, wherein: the longitudinal length of the extension rod (5) is greater than the longitudinal length of the piston rod (4).

5. The portable disposable self-rescue rapid hemostatic device according to claim 1, wherein: the outer peripheral surface of the extension rod (5) is provided with a guide groove, and the inner peripheral surface of the piston rod (4) is provided with a guide boss, and the guide boss longitudinally slides in the guide groove.

6. The portable disposable self-rescue rapid hemostatic device of claim 1, wherein: the outer peripheral surface of the extension rod (5) is provided with a guide boss, and the inner peripheral surface of the piston rod (4) is provided with a guide groove, and the guide boss longitudinally slides in the guide groove.

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