CN217310497U

CN217310497U - Injection device convenient to discernment induced pressure

Info

Publication number: CN217310497U
Application number: CN202123355416.XU
Authority: CN
Inventors: 张洪杰; 张策
Original assignee: Beipu Medical Technology Co ltd
Current assignee: Beipu Medical Technology Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-08-30
Anticipated expiration: 2031-12-29

Abstract

The utility model relates to a technical field of medical syringe, the utility model provides an injection device convenient to discernment induced pressure, including outer sleeve and push rod, the sealing washer has been cup jointed to the tip of push rod, the inside vacuole formation of front end of push rod is equipped with the cluster form vesicle in the cavity. Compared with the prior art, the novel combined type bubble has the advantages that the structure of the built-in bubble body is adopted, the appearance is clustered, the visual and the recognition are convenient, and the operation hand feeling is light. Therefore, the device has the advantages of improving the puncture success rate and safety; and the device has the advantages of low cost, simple structure, convenient use by new hands and convenient teaching, is skillfully used for completing the spinal dura mater puncture operation, and can be widely applied to surgical anesthesia and clinical examination and treatment of various medical institutions.

Description

Injection device convenient to discernment induced pressure

Technical Field

The utility model relates to a technical field of medical syringe specifically is an injection device convenient to discernment induced pressure, its mechanical connection structure of in particular to.

Background

In modern medical treatment, when local or general anesthesia is performed on a patient, the dura mater of the spine needs to be punctured first, so that a needle head enters the epidural space of the spine. The spine is shallow, cannot penetrate through the dura mater of the spine, and cannot be normally anesthetized; the puncture is deep and is easy to damage the spinal cord or nerves, and the success of the puncture is completely determined by the feeling and experience of an operator.

Reference, patent No.: 2012200898482, filing date: 2012-03-12; patentee: henan camel medical instrument group limited company, this case discloses a "epidural space puncture is with high resistance push rod vesicle indicating syringe", the device includes the ware body, syringe needle and push rod its characterized in that: the device body or the mouth of the device body or the root of the needle head is provided with a branch pipe, the branch pipe is provided with a sealing vesicle, the push rod is pushed forwards, and the sealing vesicle expands and has the following relations: (P1-P0). times.S is less than or equal to Fmax, wherein P1 is the fluid pressure in the sealed vesicle; p0 is atmospheric pressure; s is the projection area of the push rod sealing surface on the cross section of the push rod; fmax is the maximum static friction force between the push rod and the inner wall of the device body. The above relationship is embodied as: the push rod is pushed forwards, and after the sealing vesicle expands, the push rod is released and does not retreat. The vesicle is made of elastic or flexible material, and is impermeable to water and air. The branch pipe is arranged on the side wall of the front section of the device body and is communicated with the inner cavity of the device body; as optimization, the branch pipe is arranged on the side wall of the mouth of the device body and is communicated with the inner cavity of the device body; preferably, the branch pipe is arranged on the side wall of the root part of the needle head and is communicated with the inner cavity of the needle head. The utility model discloses when clinical concrete actual operation, the vesicle becomes flat the time push rod rearward movement to the judgement that can not be accurate is because the vesicle that the puncture target in place back negative pressure arouses becomes flat or because the vesicle that the push rod rearward movement arouses becomes flat.

The epidural space puncture injector in the market is of a vesicle external structure, so that the appearance is not attractive, and the vesicle is exposed in the environments of various medical sharp instruments and is easy to cause accidental injury and puncture to cause operation failure.

Disclosure of Invention

Technical problem to be solved

Not enough to prior art, the utility model provides an injection device convenient to discernment induced pressure to solve the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an injection device convenient to discernment response pressure, includes outer sleeve and push rod, and the sealing washer has been cup jointed to the tip of push rod, the inside vacuole formation of front end of push rod is equipped with the cluster form vesicle in the cavity.

Compared with the prior art, the utility model provides an injection device convenient to discernment induced pressure adopts vesicle inner structure, and the appearance is in a cluster form, is convenient for visible and discernment, and the operation is felt lightly. Therefore, the device has the advantages of improving the puncture success rate and safety; and the device has the advantages of low cost, simple structure, convenient use by novice and convenient teaching, is skillfully used for the spinal dura mater puncture operation, and can be widely applied to surgical anesthesia and clinical examination and treatment of various medical institutions.

Drawings

Fig. 1 is a schematic structural diagram of the injection device of the present invention.

Fig. 2 is an exploded view of the injection device of the present invention.

Fig. 3 is a schematic view of a first embodiment of the assembled tufted bladder structure of the present invention.

Fig. 4 is a schematic view of the card cover assembly structure of the present invention.

Fig. 5 is a schematic view of a second embodiment of the clustered bladder assembly structure of the present invention.

Fig. 6 is a perspective view of the tufted bladder of the present invention.

Fig. 7 is a schematic diagram of the structure of the clustered vesicles of the invention.

Fig. 8 is a perspective view of the push rod of the present invention.

Fig. 9 is a schematic view of the structure of the push rod of the present invention.

Wherein: 1. an outer sleeve; 2. a seal ring; 3. (ii) clustered vesicles; 31. a vesicle snap ring; 32. vesicle tuft angle; 33. a vesicle body; 34. a cavity; 35. a bottom region; 36. a side wall; 4. a push rod; 41. a leading edge; 42. a seal ring groove; 43. an annular clamping groove; 44 a cavity; 411. a limiting ring; 441. a cavity neck; 5. a cover is clamped; 51. a clamping block; 52. a support pillar; 53 through holes; 511. a raised portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an injection apparatus convenient to discernment induced pressure, includes outer sleeve 1 and push rod 4, and the sealing washer 2 has been cup jointed to the tip of push rod 4, and it is different from prior art and lies in: the front end of the push rod 4 forms a cavity 44 inwards, and a cluster-shaped vesicle 3 is arranged in the cavity 44.

In specific implementation, as shown in fig. 6, the clustered bladder 3 is composed of a bladder body 33 and a bladder cluster angle 32, a cavity 34 is formed in the bladder body 33, the cavity 34 is open at the upper end of the bladder body 33, the bladder cluster angle 32 is distributed at the lower end of the bladder body 33, and a bladder snap ring 31 is formed at the outer edge of the upper end of the bladder body 33.

In particular implementation, as shown in FIG. 7, the bottom region 35 of the bladder body 33 is shown to have an average bladder wall thickness that is less than the thickness of the side wall 36 of the bladder body 33. preferably, the bottom region 35 of the bladder body 33 has a rounded bottom, and the thickness of the bladder wall in the bottom region 35 is gradually thinner, the thickness being thinner towards the center of the rounded bottom; in the process of pushing the medicine by the injector, under the action of pressure, the clustered vesicle 3 is stressed to bulge, the deformation of the thick part of the vesicle wall is small, the vesicle wall of the bottom area 35 is thin and the thinner the vesicle wall is towards the center, so that the large deformation is generated, after the deformation, the four vesicle cluster corners 32 positioned at the bottom area are also stretched towards the periphery, and the change process of the vesicle cluster corners 32 can be obviously observed by naked eyes.

In a practical implementation, the cavity 44 forms a cavity neck 441 at the front end of the push rod 4, the cavity neck 441 forms an annular notch 43 at the cavity wall that cooperates with the above-mentioned blister retaining ring 31, and the blister retaining ring 31 is embedded in the annular notch 43 of the push rod 4.

In particular implementations, the cavity neck 441 has an inner diameter that is greater than an inner diameter of the lower cavity 44.

In the specific implementation, the push rod 4 forms a seal ring groove 42 matched with the seal ring 2 at the outer wall near the front end.

In a specific implementation, as shown in fig. 3, a front edge 41 is formed at the front end of the push rod 4, the front edge 41 is folded inwards to form a limiting ring 411, the limiting ring 411 is formed by secondary forming, and the limiting ring 411 is used for limiting the tufted bubble 3.

In practical implementation, as shown in fig. 4 to 5, in the tufted bladder 3, there is another positioning manner, a cover 5 is disposed in the cavity neck 441, at least 4 blocks 51 are disposed at a position close to an outer edge of the lower portion of the cover 5, the blocks 51 are distributed at equal angles, a protrusion 511 is formed at an outer side of the block 51, an annular limiting groove 46 matched with the protrusion 511 is formed on an inner wall of the cavity neck 441, the protrusion 511 and the annular limiting groove 46 are in interference fit for limiting axial displacement of the cover 5, and the cover 5 presses the bladder retaining ring 31 of the bladder body 33 downward. A support column 52 extending downwards is formed below the card cover 5, the support column 52 extends into the cavity 34 of the vesicle body 33 and is used for supporting the inner space of the vesicle body 33, the support column 52 is in a split-flap structure, the support column 52 is at least divided into a left flap and a right flap in the longitudinal direction, a gap is formed between the main body flaps so as to facilitate the liquid circulation, a through hole 53 communicated with the inner part of the support column 52 is formed at the card cover 5, preferably, the support column 52 is divided into a four-flap structure in the longitudinal direction, a gap is formed between the flaps and is communicated with the through hole 53 so as to facilitate the liquid introduction.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an injection apparatus convenient to discernment induced pressure, includes outer sleeve (1) and push rod (4), and sealing washer (2), its characterized in that have been cup jointed to the tip of push rod (4): the front end of the push rod (4) inwards forms a cavity (44), and a cluster-shaped vesicle (3) is arranged in the cavity (44).

2. An injection device for facilitating identification of sensed pressure as claimed in claim 1, wherein: the clustered bubble (3) is composed of a bubble body (33) and a bubble cluster angle (32), a cavity (34) is formed in the bubble body (33), the cavity (34) is open at the upper end of the bubble body (33), the bubble cluster angle (32) is distributed at the lower end of the bubble body (33), and a bubble clamping ring (31) is formed at the outer edge of the upper end of the bubble body (33).

3. An injection device for facilitating identification of sensed pressure as claimed in claim 2, wherein: the cavity (44) forms a cavity neck (441) at the front end of the push rod (4), the cavity neck (441) forms an annular clamping groove (43) matched with the vesicle clamping ring (31) at the cavity wall, and the vesicle clamping ring (31) is embedded into the annular clamping groove (43) of the push rod (4).

4. An injection device for facilitating identification of sensed pressure as claimed in claim 3, wherein: the cavity neck (441) has an inner diameter value greater than an inner diameter value of the lower cavity (44).

5. An injection device for facilitating identification of sensed pressure as claimed in claim 1, wherein: and a sealing ring groove (42) matched with the sealing ring (2) is formed on the outer wall of the push rod (4) close to the front end.

6. An injection device to facilitate identification of sensed pressure as claimed in claim 3, wherein: the front end of the push rod (4) is provided with a front edge (41), and the front edge (41) is turned inwards to form a limiting ring (411).

7. An injection device for facilitating identification of sensed pressure as claimed in claim 3, wherein: the cavity neck (441) is internally provided with a clamping cover (5), the lower part of the clamping cover (5) is provided with at least 4 clamping blocks (51) close to the outer edge, the clamping blocks (51) are distributed at equal included angles, a protruding part (511) is formed at the outer side of each clamping block (51), an annular limiting groove (46) matched with the protruding part (511) is formed on the inner wall of the cavity neck (441), the protruding part (511) is in interference fit with the annular limiting groove (46) and used for limiting the axial displacement of the clamping cover (5), and the clamping cover (5) downwards compresses a blister clamping ring (31) of the blister body (33).

8. An injection device to facilitate identification of sensed pressure as claimed in claim 7, wherein: a supporting column (52) extending downwards is formed below the clamping cover (5), and the supporting column (52) extends into the cavity (34) of the blister body (33) and is used for supporting the inner space of the blister body (33).

9. An injection device to facilitate identification of sensed pressure as claimed in claim 8, wherein: the supporting column (52) is of a split structure, and the supporting column (52) is longitudinally and equally divided into a left lobe and a right lobe at least.