A syringe module

Abstract

The present invention relates to a syringe module, which includes a safety sheath. The safety sheath includes a connecting body and a base; the connecting body is hinged to the base, and a groove is provided on the base; a V-shaped elastic piece is arranged between the connecting body and the base, one end of the V-shaped elastic piece is connected to the connecting body, and the other end is connected to the base; a barb is arranged in the middle of the groove, and a needle blocking plate is arranged in the groove; the base includes a bottom plate and a retaining wall, the retaining wall is arranged on both sides of the bottom plate and at one end of the bottom plate away from the connecting body, and a groove is formed between the retaining wall and the bottom plate; the bottom plate includes a first bottom plate and a second bottom plate, an elastic piece is arranged between the first bottom plate and the bottom plate, one end of the elastic piece is connected to the first bottom plate, and the other end of the elastic piece is connected to the second bottom plate, and the barb and the needle blocking plate are both arranged on the first bottom plate; weak parts are arranged on the retaining walls on both sides of the bottom plate, and the weak parts are arranged corresponding to the elastic piece; when the weak parts are damaged, the deformation of the elastic piece can cause the second bottom plate to turn towards the inner side of the groove. This module can prevent the discarded needle rod from accidentally injuring the user or others.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a syringe module. Background Art

[0002] As is well known, syringes are widely used in clinical medicine. Especially in the case of the global pandemic, vaccination has become an effective preventive measure. Among them, the plunger of the syringe is used to pierce human tissues. For example, it pierces into human muscles or blood vessels to inject medicine into human tissues. Correspondingly, the used plunger may also accidentally injure the user or others. For example, it pierces the human skin, resulting in cross-infection of body fluids such as blood. Therefore, various forms of safety syringes have emerged on the market.

[0003] In response to the above problems, people have developed safety syringes, such as a syringe with the application number "202111302763.8" and the invention name "A Safe and Low-Residue Syringe". This syringe prevents the used plunger from accidentally injuring the user or others by covering the plunger with a safety protective cover. In this structure, when in actual use, after the plunger is hooked by the barb, there is a certain distance between the plunger and the bottom plate. When the finger touches the opening position of the safety protective cover, there is still a risk of accidental injury when part of the tissue is squeezed into the opening position corresponding to the tip of the plunger. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a syringe module to solve the above technical problems.

[0005] In order to achieve the above invention object, a technical solution provided by the present invention is as follows:

[0006] A syringe module includes a safety sheath, and the safety sheath includes a connecting body and a base. The connecting body is used for connecting a needle holder; the connecting body is hinged to the base, and a groove for covering a needle rod is provided on the base; a V-shaped elastic sheet is arranged between the connecting body and the base, one end of the V-shaped elastic sheet is connected to the connecting body, and the other end is connected to the base; a barb is arranged in the middle of the groove, and a needle blocking plate is arranged on one side of the opening corresponding to the barb in the groove; the base includes a bottom plate and a retaining wall. The retaining wall is arranged on both sides of the bottom plate and at one end of the bottom plate away from the connecting body, and the groove is formed between the retaining wall and the bottom plate; the bottom plate includes a first bottom plate and a second bottom plate, and an elastic sheet is arranged between the first bottom plate and the second bottom plate. One end of the elastic sheet is connected to the first bottom plate, and the other end is connected to the second bottom plate. The barb and the needle blocking plate are both arranged on the first bottom plate; a weak part is arranged on the retaining walls on both sides of the bottom plate, and the weak part corresponds to the elastic sheet; when the weak part is damaged, the deformation of the elastic sheet can cause the second bottom plate to turn towards the inner side of the groove.

[0007] Preferably, the retaining walls arranged on both sides of the bottom plate include a first retaining wall and a second retaining wall. The first retaining wall is arranged on the first bottom plate, and the second retaining wall is arranged on the second bottom plate. A connecting block is arranged between the first retaining wall and the second retaining wall. One end of the connecting block is connected to the first bottom plate, and the other end is connected to the second bottom plate; gaps are arranged between the first retaining wall and the second retaining wall and the connecting block respectively, so that a weak part is formed at the connecting block.

[0008] Preferably, the first bottom plate and the second bottom plate are hinged.

[0009] Preferably, the elastic sheet is an arc-shaped elastic sheet.

[0010] Preferably, the width of the second bottom plate is smaller than the width of the first bottom plate, and the widths of the second bottom plate and the first bottom plate are smoothly transitioned at the connection position; a first blocking piece is arranged on the inner side of the first retaining wall, and a second blocking piece cooperating with the first blocking piece is arranged on the outer side of the second retaining wall; the first blocking piece is inclined, and the end not connected to the first retaining wall is closer to the bottom plate than the other end; the second blocking piece is inclined, and the end not connected to the second retaining wall is closer to the bottom plate than the other end; when the deformation of the elastic sheet can cause the second bottom plate to turn towards the inner side of the groove, under the action of an external force, the second blocking piece can squeeze into the inner side of the first blocking piece and abut against the first blocking piece.

[0011] Preferably, there is a gap between the needle blocking plate and the corresponding first protective wall, and the distance between the needle blocking plate and the corresponding first protective wall is less than the distance between the end of the first blocking piece not connected to the first protective wall and the corresponding first protective wall; the needle blocking plate is located inside the corresponding first blocking plate.

[0012] Preferably, the barb is located on the side of the needle blocking plate away from the first bottom plate.

[0013] Preferably, the barb is located at one end of the first bottom plate close to the second bottom plate, the needle blocking plate is located on the side of the barb away from the first bottom plate, and the first blocking piece is located between the barb and the needle blocking plate.

[0014] Preferably, it further includes a needle seat, and the connecting body is connected to the needle seat.

[0015] Preferably, the connecting body is a loop, and the loop is sleeved on the needle seat.

[0016] When the syringe module of the present invention is in use, after the needle rod is hooked by the barb, the first bottom plate and the second bottom plate can be flipped inward of the groove under the action of the deformation of the elastic piece by destroying the weak part. In this way, the needle rod is close to the second bottom plate, making it more difficult for fingers to touch the tip of the needle rod, and further preventing the discarded needle rod from accidentally injuring the user or others. Description of the Drawings

[0017] Figure 1 Shows the front structural schematic diagram of the syringe module in Embodiment 1;

[0018] Figure 2 Shows Figure 1 The enlarged view at A;

[0019] Figure 3 Shows the side structural schematic diagram of the syringe module in Embodiment 1;

[0020] Figure 4 Shows Figure 3 The enlarged view at B;

[0021] Figure 5 Shows the front structural schematic diagram of the syringe module in Embodiment 2;

[0022] Figure 6 Shows the side structural schematic diagram of the syringe module in Embodiment 3;

[0023] Marks in the drawings:

[0024] Loop 1, base 2, V-shaped elastic piece 3, barb 4, needle blocking plate 5, elastic piece 6, first blocking piece 7, second blocking piece 8, needle seat 9;

[0025] Bottom plate 2-1, retaining wall 2-2, first bottom plate 2-11, second bottom plate 2-12, first retaining wall 2-21, second retaining wall 2-22, connecting block 2-23. Detailed implementation

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0027] Example 1, please refer to Figures 1-4 , this embodiment provides a syringe module, including a safety sheath. The safety sheath includes a connecting body and a base 2. The connecting body is used to connect the needle seat. In this embodiment, the connecting body is a loop 1 sleeved on the needle seat; the connecting body is hinged to the base. Generally, the connection between the connecting body and the base can be achieved through a hinge, and the hinge can also be replaced by a connecting plate. A V-shaped groove is provided on the connecting plate so that the connecting plate can be bent relative to the V-shaped groove; a groove for covering the needle rod is provided on the base; a V-shaped elastic piece 3 is provided between the connecting body and the base. One end of the V-shaped elastic piece is connected to the connecting body, and the other end is connected to the base; a barb 4 is provided in the middle of the groove, and a needle blocking plate 5 is provided on one side of the opening of the groove corresponding to the barb; the base includes a bottom plate 2-1 and a retaining wall 2-2. The retaining wall is provided on both sides of the bottom plate and at one end of the bottom plate away from the connecting body. The groove is formed between the retaining wall and the bottom plate; the bottom plate includes a first bottom plate 2-11 and a second bottom plate 2-12. A elastic piece 6 is provided between the first bottom plate and the second bottom plate. One end of the elastic piece is connected to the first bottom plate, and the other end of the elastic piece is connected to the second bottom plate. The barb and the needle blocking plate are both provided on the first bottom plate; weak parts are provided on the retaining walls on both sides of the bottom plate, and the weak parts correspond to the elastic piece; when the weak parts are damaged, the deformation of the elastic piece can make the second bottom plate flip towards the inner side of the groove, so that the tip of the needle rod closely adheres to the second bottom plate.

[0028] When the above syringe module is in use, after the needle rod is hooked by the barb, by destroying the weak part, the first bottom plate and the second bottom plate can be made to flip towards the inner side of the groove under the action of the deformation of the elastic piece. The flipping direction can be seen in Figure 5 the direction indicated by the arrow. In this way, the needle rod closely adheres to the second bottom plate, making it more difficult for the finger to touch the tip of the needle rod, and further preventing the discarded needle rod from accidentally injuring the user or others.

[0029] In one embodiment, the retaining walls disposed on both sides of the bottom plate include a first retaining wall 2-21 and a second retaining wall 2-22. The first retaining wall is disposed on the first bottom plate, and the second retaining wall is disposed on the second bottom plate. A connecting block 2-23 is provided between the first retaining wall and the second retaining wall. One end of the connecting block is connected to the first bottom plate, and the other end is connected to the second bottom plate. A gap is provided between the first retaining wall and the second retaining wall and the connecting block, so that a weak part is formed at the connecting block. After the anchor rod is hooked by the barb, two fingers press the connecting blocks on both sides to make the two connecting blocks fall off, so that the first bottom plate and the second bottom plate are only connected by the elastic piece. During installation, the elastic piece has a preset elastic force. Under the action of the preset elastic force, the second bottom plate flips towards the inner side of the groove. In this embodiment, the elastic piece uses Figure 4 the arc-shaped elastic piece shown in

[0030] In one embodiment, the first bottom plate and the second bottom plate can also be arranged in a hinged manner to limit the axis when the second bottom plate flips.

[0031] Embodiment 2 is substantially the same as the structure of Embodiment 1, except that the width of the second bottom plate is smaller than the width of the first bottom plate, and the widths of the second bottom plate and the first bottom plate are smoothly transitioned at the connection position. A first blocking piece 7 is provided on the inner side of the first retaining wall, and a second blocking piece 8 that cooperates with the first blocking piece is provided on the outer side of the second retaining wall. The first blocking piece is inclined, and the end not connected to the first retaining wall is closer to the bottom plate than the other end. The second blocking piece is inclined, and the end not connected to the second retaining wall is closer to the bottom plate than the other end. Generally, the first blocking piece is provided at one end of the first retaining wall away from the second bottom plate, and the second blocking piece is provided at one end of the second retaining wall away from the second bottom plate. When the elastic piece deforms to enable the second bottom plate to flip towards the inner side of the groove, under the action of an external force, the second blocking piece can squeeze into the inner side of the first blocking piece and abut against the first blocking piece. In this embodiment, the first blocking piece and the second blocking piece can also be referred to as a buckle or a barb. During actual production, there is a spacing between the stop pin plate and the corresponding first retaining wall, and the distance between the stop pin plate and the corresponding first retaining wall is smaller than the distance between the end of the first blocking piece not connected to the first retaining wall and the corresponding first retaining wall. The stop pin plate is located inside the corresponding first blocking plate.

[0032] When this structure is in use, after the second bottom plate flips towards the inner side of the groove, the second baffle can be manually pushed to continue flipping. At this time, the arc-shaped elastic piece stores energy. After the second blocking piece squeezes into the inner side of the first blocking piece and abuts against the first blocking piece, the arc-shaped elastic piece makes the connection between the first blocking piece and the second blocking piece more firm under the action of the elastic force, preventing it from loosening due to vibration. In addition, when the anchor rod enters the groove, such as Figure 5As shown, the needle bar is first guided by the first blocking piece on the left side, then guided by the needle blocking plate, and finally enters the barb and is hooked. In this way, the needle blocking plate can be arranged on the bottom plate without being connected to the retaining wall, thus leaving space for the second retaining wall to flip into the groove.

[0033] In one embodiment, the barb is located on the side of the needle blocking plate away from the first bottom plate.

[0034] In one embodiment, the barb is located at one end of the first bottom plate close to the second bottom plate, the needle blocking plate is located on the side of the barb away from the first bottom plate, and the first blocking piece is located between the barb and the needle blocking plate. In this way, when the second bottom plate flips, the barb forms a fulcrum for the needle bar, which is beneficial to the bending of the needle bar.

[0035] Example 3, see Figure 6 , the syringe module described in this embodiment includes the safety sheath and the needle seat 9 described in Example 1 or Example 2, and the connecting body is connected to the needle seat. In this embodiment, the connecting body is a snare 1, and the snare is sleeved on the needle seat. When this structure is used, the needle seat can be connected to the syringe barrel. In actual production, the needle seat and the syringe barrel can also be integrally arranged.

[0036] It should be noted that the phrases such as "one embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when combining specific features, structures or characteristics with an embodiment, it is within the knowledge scope of those skilled in the art to implement such features, structures or characteristics in combination with other embodiments, whether explicitly or implicitly described.

[0037] It should be easily understood that the terms "on...", "above...", and "over..." in this disclosure should be interpreted in the broadest manner, so that "on..." not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above..." or "over..." not only includes the meaning of "above or over something", but also can include the meaning of "above or over something" with no intermediate features or layers therebetween (i.e., directly on something).

[0038] In addition, for ease of description, the text may use spatial relative terms, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature to other elements or features as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation other than the orientation shown in the drawings. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatial relative descriptors used in the text may be interpreted accordingly.

[0039] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A syringe module, comprising a safety sheath, the safety sheath including a connecting body and a base (2), the connecting body being used for connecting a needle hub; the connecting body is hinged to the base, and a groove for covering a needle rod is arranged on the base; a V-shaped elastic sheet (3) is arranged between the connecting body and the base, one end of the V-shaped elastic sheet is connected to the connecting body, and the other end is connected to the base; a barb (4) is arranged in the middle of the groove, and a needle blocking plate (5) is arranged on one side of the groove corresponding to the opening of the barb; the base includes a bottom plate (2-1) and a retaining wall (2-2), the retaining wall is arranged on both sides of the bottom plate and at one end of the bottom plate away from the connecting body, and the groove is formed between the retaining wall and the bottom plate; Characterized in that, the bottom plate includes a first bottom plate (2-11) and a second bottom plate (2-12), a elastic sheet (6) is arranged between the first bottom plate and the second bottom plate, one end of the elastic sheet is connected to the first bottom plate, the other end of the elastic sheet is connected to the second bottom plate, and the barb and the needle blocking plate are both arranged on the first bottom plate; Weak parts are arranged on the retaining walls on both sides of the bottom plate, and the weak parts correspond to the elastic sheet; when the weak parts are damaged, the deformation of the elastic sheet can cause the second bottom plate to turn over towards the inner side of the groove; The retaining walls arranged on both sides of the bottom plate include a first retaining wall (2-21) and a second retaining wall (2-22), the first retaining wall is arranged on the first bottom plate, the second retaining wall is arranged on the second bottom plate, and a connecting block (2-23) is arranged between the first retaining wall and the second retaining wall, one end of the connecting block is connected to the first bottom plate, and the other end is connected to the second bottom plate; Gaps are arranged between the first retaining wall and the second retaining wall and the connecting block, so that weak parts are formed at the connecting block; The width of the second bottom plate is smaller than the width of the first bottom plate, and the width of the second bottom plate and the width of the first bottom plate are smoothly transitioned at the connection position; A first blocking piece (7) is arranged on the inner side of the first retaining wall, and a second blocking piece (8) matched with the first blocking piece is arranged on the outer side of the second retaining wall; The first blocking piece is inclined, and the end not connected to the first retaining wall is arranged closer to the bottom plate than the other end; the second blocking piece is inclined, and the end not connected to the second retaining wall is arranged closer to the bottom plate than the other end; When the deformation of the elastic sheet can cause the second bottom plate to turn over towards the inner side of the groove, under the action of an external force, the second blocking piece can squeeze into the inner side of the first blocking piece and abut against the first blocking piece.

2. A syringe module according to claim 1, Characterized in that, the first bottom plate and the second bottom plate are hinged.

3. A syringe module according to claim 1, Characterized in that, the elastic sheet is an arc-shaped elastic sheet.

4. A syringe module according to claim 1, Characterized in that, There is a distance between the needle blocking plate and the corresponding first retaining wall, and the distance between the needle blocking plate and the corresponding first retaining wall is smaller than the distance between the end of the first blocking piece not connected to the first retaining wall and the corresponding first retaining wall; The stop pin plate is located inside the corresponding first stop plate.

5. A syringe module according to claim 4, wherein, the barb is located on a side of the stop pin plate away from the first bottom plate.

6. A syringe module according to claim 4, wherein, the barb is located at one end of the first bottom plate close to the second bottom plate, the stop pin plate is located on a side of the barb away from the first bottom plate, and the first stop piece is located between the barb and the stop pin plate.

7. A syringe module according to claim 1, wherein, it further includes a needle seat (9), and the connecting body is connected to the needle seat.

8. A syringe module according to claim 7, wherein, the connecting body is a loop (1), and the loop is sleeved on the needle seat.

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