CN219251221U - Integrated safety intravenous needle - Google Patents

Abstract

The utility model relates to an integrated safe intravenous needle, which comprises a sheath, a needle seat, a needle tube, an outer sleeve and an inner sleeve, wherein the outer sleeve is sleeved outside the inner sleeve, and a space is reserved between the outer sleeve and the inner sleeve; the rear end of the outer sleeve is connected with the rear end part of the inner sleeve into a whole, and the rear end of the inner sleeve is positioned outside the outer sleeve; the needle seat is fixed on the front end of the inner sleeve; the sheath is sleeved on the inner sleeve; the side surface of the outer sleeve is provided with a strip-shaped hole, the strip-shaped hole is connected with a positioning button in a sliding way, the positioning button is provided with a clamping groove, the rear end of the sheath is provided with a clamping block, and the clamping block is clamped in the clamping groove; the front end of the clamping groove is provided with a limit bar, the front end of the limit bar is provided with an inclined part inclined to one side, and one side of the limit bar, which is close to the inclined part, is provided with a first semicircular groove; a second semicircular groove is formed in one side, away from the inclined part, of the limit strip; the top of the strip-shaped hole of the outer sleeve is provided with an auxiliary limiting strip, and the auxiliary limiting strip is provided with a cylindrical bulge. The integrated safe intravenous needle is convenient to operate.

Description

Integrated safety intravenous needle

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an integrated safe intravenous needle.

Background

The intravenous needle is a commonly used medical instrument, is mainly used for intravenous transfusion, blood transfusion or blood sampling clinically, the existing intravenous needle mainly comprises a needle tube, a needle seat and a sheath, in order to facilitate operation, the bottom of the needle seat is also provided with a side wing, the needle tube is fixed on the needle seat, the sheath is sleeved on the needle tube, the gap between the sheath and the needle tube is larger, the connection is not very firm, an operator can bump the sheath off by mistake in the process of taking the sheath to be injured, therefore, a safe catapulting intravenous needle is designed, the application number is 201921702155.4, the installation catapulting intravenous needle must be pressed at the bottom of the lock catch to pull the lock catch backwards when in use, the lock catch is not easy to separate from the lock groove when the pressed position deviates, the protection state of the sheath cannot be relieved, and the operation is inconvenient; in addition, after the safe catapulting intravenous needle is used, the lock catch can still be separated from the lock groove by pressing the bottom of the lock catch again, so that the risk of cross infection of patients caused by secondary use exists.

Disclosure of Invention

In view of the above-mentioned problems in the prior art, the present utility model provides an integrated safety intravenous needle to solve at least one of the above-mentioned problems.

In order to achieve the above object, the present utility model provides a technical solution as follows:

the integrated safe intravenous needle comprises a sheath, a needle seat, a needle tube fixed on the needle seat, an outer sleeve and an inner sleeve, wherein the outer sleeve is sleeved outside the inner sleeve, and a space is reserved between the outer sleeve and the inner sleeve; the rear end of the outer sleeve is connected with the rear end part of the inner sleeve into a whole, and the rear end of the inner sleeve is positioned outside the outer sleeve; the needle seat is fixed on the front end of the inner sleeve, so that the needle tube is communicated with the inner sleeve; the sheath is sleeved on the inner sleeve, is positioned between the inner sleeve and the outer sleeve and can relatively move relative to the outer sleeve and the inner sleeve; the side face of the outer sleeve is provided with a strip-shaped hole, a positioning button is connected to the strip-shaped hole in a sliding mode, a clamping groove is formed in one face, corresponding to the sheath, of the positioning button, a clamping block is arranged at the rear end of the sheath, and the clamping block is clamped in the clamping groove; the front end of the clamping groove is provided with a limit bar, the front end of the limit bar is provided with an inclined part inclined to one side, the included angle between the inclined part and the limit bar is larger than 90 degrees, one side of the limit bar, which is close to the inclined part, is provided with a first semicircular groove, the front end of the first semicircular groove is in smooth transition with the limit bar, and the opening of the first semicircular groove is perpendicular to the limit bar; a second semicircular groove is formed in one side, far away from the inclined part, of the limiting strip, and an opening of the second semicircular groove is obliquely arranged relative to the limiting strip and is arranged towards the clamping groove; the top of the strip-shaped hole of the outer sleeve is provided with an auxiliary limiting strip, the auxiliary limiting strip is provided with a cylindrical protrusion, and the cylindrical protrusion is located in the first semicircular groove in an original state.

Preferably, the side of the limit strip away from the inclined part is provided with an inclined protruding part, an included angle between the protruding part and the limit strip is larger than 90 degrees, and a part of the second semicircular groove is positioned on the protruding part, so that the protruding part is far away from the inclined part to form a barb.

Preferably, the two sides of the outer sleeve are fixed with side wings.

Preferably, the limit bar is arranged on the inner side surface of the positioning button and is integrally arranged with the positioning button.

Preferably, the auxiliary limiting strip is an elastic strip.

Preferably, the second semicircular groove is located in front of the first semicircular groove.

Preferably, the sheath sleeve is in contact with or with the inner sleeve and the outer sleeve with a gap therebetween.

When the integrated safe intravenous needle is used, after medical staff takes the safe intravenous needle out of a disinfection package, referring to fig. 1, after the medical staff presses a positioning button to downwards exert force, the positioning button downwards moves a first semicircular groove to squeeze a cylindrical bulge, so that the cylindrical bulge gradually breaks away from the first semicircular groove, a limit bar moves downwards along the left side of an auxiliary limit bar (referring to fig. 5) to drive a sheath to downwards move into a position between an outer sleeve and an inner sleeve, a needle tube is exposed, the safe intravenous needle completes preparation work before vascular puncture, corresponding treatment application can be carried out by the medical staff, and at the moment, the positioning button is positioned at the lower end of a bar-shaped hole and completely breaks away from the auxiliary limit bar; after the medical staff finishes using, the intravenous needle can be abandoned, at the moment, the positioning button is pressed to exert force upwards, the positioning button moves upwards to drive the sheath to move upwards, in the process of moving upwards, after the inclined part is contacted with the cylindrical bulge, the cylindrical bulge is extruded to drive the auxiliary limiting strip to shift leftwards under the guiding action of the inclined part, so that the limiting strip moves upwards along the right side of the auxiliary limiting strip until the cylindrical bulge is positioned in the second semicircular groove, the sheath covers the spike part of the needle tube, the needle tube is prevented from injuring people by mistake, at the moment, even if the positioning button is pulled downwards here, the positioning button does not move downwards again to drive the sheath to move downwards, and the risk of cross infection of patients caused by secondary use of the intravenous needle is effectively prevented; when the operation is performed, only the positioning button is pressed downwards or upwards, the problem that the protection state of the sheath cannot be relieved due to pressing deviation is avoided, and the operation is more convenient.

Drawings

FIG. 1 shows a schematic structural view of an integrated safety intravenous needle of the present utility model;

FIG. 2 shows a cross-sectional view A-A of FIG. 1;

FIG. 3 shows a schematic view of the structure of the positioning button;

FIG. 4 shows a schematic structural view of an outer sleeve;

FIG. 5 shows a state diagram of the cooperation of the positioning button and the auxiliary limit bar;

the reference numerals in the drawings:

the needle tube comprises a sheath 1, a clamping block 1-1, a needle seat 2, a needle tube 3 fixed on the needle seat, an outer sleeve 4, a strip-shaped hole 4-1, an auxiliary limit strip 4-2, a cylindrical bulge 4-21, an inner sleeve 5, a positioning button 6, a clamping groove 6-1, a limit strip 6-2, an inclined part 6-21, a first semicircular groove 6-22, a second semicircular groove 6-23, a bulge 6-24 and a flank 7.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1-5, the utility model provides an integrated safety intravenous needle, which comprises a sheath 1, a needle seat 2, a needle tube 3 fixed on the needle seat, an outer sleeve 4 and an inner sleeve 5, wherein the outer sleeve is sleeved outside the inner sleeve, and a space is reserved between the outer sleeve and the inner sleeve; the rear end of the outer sleeve is connected with the rear end part of the inner sleeve into a whole, and the rear end of the inner sleeve is positioned outside the outer sleeve; the needle seat is fixed on the front end of the inner sleeve, so that the needle tube is communicated with the inner sleeve; the sheath is sleeved on the inner sleeve, is positioned between the inner sleeve and the outer sleeve and can move relative to the outer sleeve and the inner sleeve, and a gap or a joint is reserved between the sheath and the outer sleeve and between the sheath and the inner sleeve during manufacturing; the side face of the outer sleeve is provided with a strip-shaped hole 4-1, the strip-shaped hole is connected with a positioning button 6 in a sliding manner, one face of the positioning button corresponding to the sheath is provided with a clamping groove 6-1, the rear end of the sheath is provided with a clamping block 1-1, and the clamping block is clamped in the clamping groove; the front end of the clamping groove is provided with a limit strip 6-2, and in the embodiment, the limit strip is arranged on the inner side surface of the positioning button and is integrally arranged with the positioning button; the front end of the limit strip is provided with an inclined part 6-21 inclined to one side, the included angle between the inclined part and the limit strip is larger than 90 degrees and is generally about 120 degrees, one side of the limit strip, which is close to the inclined part, is provided with a first semicircular groove 6-22, the front end of the first semicircular groove is in smooth transition with the limit strip, and the opening of the first semicircular groove is perpendicular to the limit strip; a second semicircular groove 6-23 is formed in one side, far away from the inclined part, of the limiting strip, the opening of the second semicircular groove is obliquely arranged relative to the limiting strip, and the direction of the opening of the second semicircular groove faces towards the clamping groove; the top of the strip-shaped hole of the outer sleeve is provided with an auxiliary limit strip 4-2, the auxiliary limit strip can be made to be slightly thinner, so that the auxiliary limit strip has certain elasticity, the elastic strip can also be directly made of an elastic material, the auxiliary limit strip is provided with a cylindrical bulge 4-21, and in an original state, the cylindrical bulge is positioned in the first semicircular groove.

When the integrated safety intravenous needle is used, after the medical staff takes out the safety intravenous needle from the disinfection package, referring to fig. 1, the positioning button is pressed down to exert force, the positioning button moves down to the first semicircular groove to extrude the cylindrical bulge, so that the cylindrical bulge gradually breaks away from the first semicircular groove, the limiting strip moves downwards along the left side of the auxiliary limiting strip (referring to fig. 5), the sheath is driven to move downwards to enter the position between the outer sleeve and the inner sleeve, the needle tube is exposed, the safety intravenous needle completes the preparation work before vascular puncture, the medical staff can carry out corresponding treatment application, and at the moment, the positioning button is positioned at the lower end of the strip-shaped hole and completely breaks away from the auxiliary limiting strip;

after the medical staff finishes using, the intravenous needle can be abandoned, at the moment, the positioning button is pressed to exert force upwards, the positioning button moves upwards to drive the sheath to move upwards, in the process of moving upwards, after the inclined part is contacted with the cylindrical bulge, the cylindrical bulge is extruded to drive the auxiliary limiting strip to shift leftwards under the guiding action of the inclined part, so that the limiting strip moves upwards along the right side of the auxiliary limiting strip until the cylindrical bulge is positioned in the second semicircular groove, the sheath covers the spike part of the needle tube, the needle tube is prevented from injuring people by mistake, at the moment, even if the positioning button is pulled downwards here, the positioning button does not move downwards again to drive the sheath to move downwards, and the risk of cross infection of patients caused by secondary use of the intravenous needle is effectively prevented; when the operation is performed, only the positioning button is pressed downwards or upwards, the problem that the protection state of the sheath cannot be relieved due to pressing deviation is avoided, and the operation is more convenient.

In one embodiment, an inclined protruding part 6-24 is arranged on one side of the limit bar away from the inclined part, an included angle between the protruding part and the limit bar is larger than 90 degrees, generally 145 degrees or so, a part of the second semicircular groove is positioned on the protruding part, so that a barb is formed at the position of the protruding part away from the inclined part, and after the cylindrical protrusion enters the second semicircular groove, the barb hooks the cylindrical protrusion, so that the cylindrical protrusion is not easy to separate from the second semicircular groove when the positioning button is pulled down; typically, the second semicircular groove is located in front of the first semicircular groove.

For convenient taking and operation, the two sides of the outer sleeve are fixed with side wings 7.

It should be noted that the above structure is only a preferred embodiment of the present utility model, and various changes may be made according to this embodiment, for example, the ventilation rod may be made into a tubular structure with a closed bottom, and a vent hole communicating with the interior of the tube may be provided near the front end, so that the front end of the ventilation rod penetrates through the sealed body to enable the vent hole to be exposed out of the sealed body, and the function of communicating the nutrient solution or the liquid medicine with the atmosphere may be achieved; other operation components may be provided on the push rod, so long as the function of releasing the seal of the cylinder by the operation component is achieved, and the present utility model is not particularly limited. In this application, terms such as front and rear are used with reference to the drawings.

In summary, the infusion set and the injector are skillfully designed into a whole, the conversion work from the injector to the infusion set can be completed by only one action in clinical use, on one hand, precious treatment time is saved, no longer as the conventional operation, the injector is used for extracting nutrient solution or liquid medicine with specific capacity, then the nutrient solution or liquid medicine is pushed into a nutrient solution bag or an infusion bag through various adapters, and finally, the infusion can be carried out to the cavity of a human body; on the other hand, the infusion device is also beneficial to saving precious nutrient solution or liquid medicine for patients, and avoids being stained and consumed by medical instruments in the sucking and pushing processes, thereby influencing the treatment process of accurate infusion for patients.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).

Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that in this document, relational terms 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 actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

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

Claims (7)

1. The integrated safe intravenous needle comprises a sheath (1), a needle seat (2) and a needle tube (3) fixed on the needle seat, and is characterized by further comprising an outer sleeve (4) and an inner sleeve (5), wherein the outer sleeve is sleeved outside the inner sleeve, and a space is reserved between the outer sleeve and the inner sleeve; the rear end of the outer sleeve is connected with the rear end part of the inner sleeve into a whole, and the rear end of the inner sleeve is positioned outside the outer sleeve; the needle seat is fixed on the front end of the inner sleeve, so that the needle tube is communicated with the inner sleeve; the sheath is sleeved on the inner sleeve, is positioned between the inner sleeve and the outer sleeve and can relatively move relative to the outer sleeve and the inner sleeve;

the side face of the outer sleeve is provided with a strip-shaped hole (4-1), the strip-shaped hole is connected with a positioning button (6) in a sliding manner, one face of the positioning button corresponding to the sheath is provided with a clamping groove (6-1), the rear end of the sheath is provided with a clamping block (1-1), and the clamping block is clamped in the clamping groove;

the front end of the clamping groove is provided with a limit bar (6-2), the front end of the limit bar is provided with an inclined part (6-21) inclined to one side, the included angle between the inclined part and the limit bar is larger than 90 degrees, one side of the limit bar, which is close to the inclined part, is provided with a first semicircular groove (6-22), the front end of the first semicircular groove is in smooth transition with the limit bar, and the opening of the first semicircular groove is perpendicular to the limit bar;

a second semicircular groove (6-23) is formed in one side, far away from the inclined part, of the limiting strip, and an opening of the second semicircular groove is obliquely arranged relative to the limiting strip and is arranged towards the clamping groove;

the top of the strip-shaped hole of the outer sleeve is provided with an auxiliary limiting strip (4-2), the auxiliary limiting strip is provided with a cylindrical bulge (4-21), and the cylindrical bulge is positioned in the first semicircular groove in an original state.

2. The integrated safety intravenous needle according to claim 1, wherein the side of the limit bar remote from the inclined portion is provided with inclined protrusions (6-24), the angle between the protrusions and the limit bar is greater than 90 °, and a portion of the second semicircular groove is located on the protrusions, so that barbs are formed on the protrusions at positions remote from the inclined portion.

3. An integrated safety intravenous needle according to claim 1, characterized in that the outer sleeve is fixed with wings (7) on both sides.

4. The integrated safety intravenous needle of claim 1, wherein the stop bar is disposed on an inside surface of the positioning button and is integrally disposed with the positioning button.

5. The integrated safety intravenous needle of claim 1, wherein the auxiliary stop bar is an elastic bar.

6. The integrated safety intravenous needle of claim 1, wherein the second semicircular groove is forward of the first semicircular groove.

7. The integrated safety intravenous needle of claim 1, wherein the sheath is in contact with or in clearance with the inner and outer cannulas.

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