CN211096659U

CN211096659U - Safe ejection vein needle

Info

Publication number: CN211096659U
Application number: CN201921702155.4U
Authority: CN
Inventors: 刘辉; 范文斌
Original assignee: JIANGSU KANGBAO MEDICAL EQUIPMENT CO Ltd
Current assignee: JIANGSU KANGBAO MEDICAL EQUIPMENT CO Ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-07-28
Anticipated expiration: 2029-10-11

Abstract

The utility model relates to a safe ejection vein needle, which comprises a sheath, a needle seat, a needle tube fixed on the needle seat and a base, wherein the base is provided with a holding cavity, the needle seat is fixed in the holding cavity, and the needle tube is exposed out of the holding cavity; the needle tube is covered by the sheath, the bottom of the needle tube is positioned in the accommodating cavity and is provided with a first limiting structure, the top of the accommodating cavity is provided with a second limiting structure matched with the first limiting structure, an elastic element is arranged in the accommodating cavity, and the elastic element props against the bottom end of the sheath; the top of base is provided with first joint structure, and the bottom is provided with second joint structure, is provided with on the sheath with first joint structure and the second joint structure complex third joint structure. The utility model provides a safe ejection vein needle can prevent that operating personnel from bumping the sheath and being pricked at the in-process mistake of taking.

Description

Safe ejection vein needle

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to safe ejection vein needle.

Background

The venous needle is a commonly used medical apparatus, mainly used for intravenous infusion, blood transfusion or blood sampling clinically, the existing venous needle mainly comprises needle tubing, needle bar and protective sleeve, in order to facilitate the operation, the bottom of the general needle bar generally sets up the blade, the needle tubing is fixed on needle bar, the protective sleeve is fitted on needle tubing, this kind of structure, the protective sleeve is merely fitted on needle tubing, if use the material with greater friction such as rubber to make, the connection of protective sleeve and needle tubing is more firm, but the needle point is easy to pass and stab the operating personnel, therefore, the protective sleeve is often made of hard material, in this way, the gap between protective sleeve and needle tubing is bigger, the connection is not very firm,

the sheath is easily mistakenly knocked off and is easily punctured in the taking process of an operator.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the above-mentioned prior art, the utility model provides a solve above-mentioned technical problem's safe ejection vein needle.

In order to realize the purpose of the utility model, the utility model provides a technical scheme as follows:

a safe ejection intravenous needle comprises a sheath, a needle seat, a needle tube fixed on the needle seat and a base, wherein the base is provided with an accommodating cavity, the needle seat is fixed in the accommodating cavity, and the needle tube is exposed out of the accommodating cavity; the needle tube is covered by the sheath, the bottom of the needle tube is positioned in the accommodating cavity and is provided with a first limiting structure, the top of the accommodating cavity is provided with a second limiting structure matched with the first limiting structure, an elastic element is arranged in the accommodating cavity, and the elastic element abuts against the bottom end of the sheath; the top of the base is provided with a first clamping structure, the bottom of the base is provided with a second clamping structure, and the sheath is provided with a third clamping structure matched with the first clamping structure and the second clamping structure; in an original state, the first clamping structure is connected with the third clamping structure, and under the action of a first external force, the first clamping structure can be separated from the third clamping structure; first joint structure with under the state that second joint structure breaks away from, and receive the effect of second external force under, the sheath can be to being close to elastic element's direction slides until second joint structure with third joint structure connects for the needle tubing exposes outside the sheath, first external force with second external force is on different directions.

Before the safety ejection intravenous needle provided by the utility model is used, the needle tube is covered by the sheath, so as to prevent the sharp part at the tip of the needle tube from hurting people; the elastic element props against the bottom end of the sheath, so that the sheath is not easy to retreat, the first limiting mechanism is matched with the second limiting mechanism to prevent the sheath from being knocked off and separated from the base, and the first clamping structure is matched with the third clamping structure to prevent the sheath from being forced to retreat to expose the tip of the needle tube to hurt people;

during the use, exert first external force for third joint structure for first joint structure breaks away from with third joint structure, then exert second external force and make the sheath to the direction that is close to elastic element slide until second joint structure is connected with third joint structure, make the needle tubing expose outside the sheath, elastic element energy storage this moment, because second joint structure is connected with third joint structure and has restricted the sheath and upwards removed, consequently medical staff can normally use this product.

As a preferred embodiment, under the action of a third external force, the second clamping structure can be separated from the third clamping structure, the sheath can be restored to the original state under the action of an elastic element, and the third external force and the action force of the elastic element on the sheath are in different directions. The structure can restore to the original state after the safe ejection intravenous needle is used, so that the sharp end of the needle tube can be prevented from exposing out of the sheath to hurt people before and after the safe ejection intravenous needle is used, and the sheath can not be rebounded by mistake to influence the use because the third external force and the acting force of the elastic element on the sheath are different in directions.

In a preferred embodiment, the first position-limiting structure is a stop-back piece, and the second position-limiting structure is a stop-back ring. Such a binding structure jacket is more firmly secured.

As a preferred embodiment, a lower sliding groove penetrates through one side of the base, a lower locking groove is formed at the bottom of the lower sliding groove, and the lower locking groove forms the second clamping structure; the top of the base is provided with a blade, the top of the blade is provided with an upper locking groove, an upper sliding groove penetrates through the lower part of the upper locking groove, the upper sliding groove is communicated with the lower sliding groove, and the upper sliding groove and the upper locking groove form the first clamping structure; the sheath is provided with a buckle lock, the top of the buckle lock is provided with an upper lock hook matched with the upper lock groove, the bottom of the buckle lock is provided with a lower lock hook matched with the lower lock groove, the upper lock hook is arranged downwards, the lower lock hook is arranged upwards, and the upper lock hook and the lower lock hook form a third clamping structure. The structure is simple and the use is convenient.

As a preferred embodiment, a connecting seat is arranged on the latch between the upper latch hook and the lower latch hook, and the connecting seat is connected with the sheath; the connecting seat is in sliding connection with a through sliding groove formed by combining the upper sliding groove and the lower sliding groove. Through setting up the connecting seat, more make things convenient for medical staff to operate.

Specifically, the upper locking hook and the lower locking hook are both hooks formed by 10-70 degrees.

Specifically, the elastic element is a spring, and the spring is sleeved on the needle seat.

In order to facilitate the connection of the catheter, the end of the needle seat which is not connected with the needle tube penetrates out of the base.

Preferably, a catheter is connected to the end of the needle seat which is not connected with the needle tube, so that the needle seat is convenient to use.

Preferably, the base is cylindrical in shape to accommodate the use of the product.

Drawings

Fig. 1 is a schematic exploded view of a safety ejection intravenous needle according to the present invention;

fig. 2 shows a schematic diagram of an explosion structure of a safety ejection intravenous needle of the present invention;

fig. 3 shows a schematic view of the safety ejection intravenous needle according to the present invention in its original state;

fig. 4 is a schematic view showing a use state of a safety ejection vein needle of the present invention;

fig. 5 is a schematic diagram illustrating a recovery state of a safety ejection intravenous needle after use;

the labels in the figure are: sheath 1, buckle 11, buckle top 111, buckle bottom 112, connecting seat 113, upper lock hook 12, lower lock hook 13, check piece 14, blade 2, upper lock groove 21, upper slide groove 22, needle base 3, lower lock groove 31, lower slide groove 32, needle tube 33, check limiting ring 34, base 35, spring 4 and conduit 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. 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.

The utility model provides a safe ejection vein needle, which is shown in figure 1 and figure 2, and comprises a sheath 1, a needle seat 3 and a needle tube 33 fixed on the needle seat, and is characterized in that the safe ejection vein needle also comprises a base 35, wherein the base is provided with a holding cavity, the shape of the base can be generally set to be cylindrical, the shape of the corresponding holding cavity can also be set to be cylindrical, the needle seat is fixed in the holding cavity, and the needle tube is exposed out of the holding cavity; the needle tube is covered by the sheath, the bottom of the needle tube is positioned in the accommodating cavity and is provided with a check sheet 14, the top of the accommodating cavity is provided with a check limiting ring 34 which is generally a circular truncated cone-shaped ring matched with the check sheet and is integrated with the base, a spring 4 is arranged in the accommodating cavity, and the spring is sleeved on the needle base and abuts against the bottom end of the sheath; a lower sliding groove 32 penetrates through one side of the base, a lower locking groove 31 is formed in the bottom of the lower sliding groove 32, and the lower locking groove forms the second clamping structure; the top of the base is provided with a blade 2, the top of the blade is provided with an upper locking groove 21, an upper sliding groove 22 is arranged below the upper locking groove in a penetrating mode, the upper sliding groove is communicated with the lower sliding groove, the upper sliding groove and the upper locking groove form a first clamping structure, and the fin can be further integrally provided with a cylinder so as to be connected with the cylindrical base conveniently; be provided with padlock 11 on the sheath, padlock 11 top be equipped with go up locked groove complex upper lock hook 12, the bottom be equipped with lower locked groove complex lower lock hook 13, upper lock hook sets up down, lower lock hook sets up, upper lock hook with lower lock hook forms third joint structure. A connecting seat 113 is arranged on the position, between the upper lock hook and the lower lock hook, of the buckle, the connecting seat is connected with the sheath, the connecting seat, the sheath and the buckle are generally integrally arranged, and the connecting seat is in sliding connection with a through sliding groove formed by combining the upper sliding groove 22 and the lower sliding groove 32.

The use steps of the structural functions of each part of the safe ejection vein needle are as follows:

the utility model discloses the product state of dispatching from the factory is shown in fig. 3, and needle tubing 33 is being protected by sheath 1 that the outside was surroundd, prevents that the sharp part in needle tubing most advanced from hurting the people, and spring 4 is in the state of relaxing, and upper and lower both ends are respectively to touch check piece 14 and base 35 bottom. At this time, the upper latch hook 12 at the tip of the latch 11 is securely latched in the upper latch groove 21 at the tip of the blade 2, and the sheath 1 is restricted from freely sliding, thereby preventing the needle tube 33 from being exposed to the sharp tip and injuring a person by accidental touch.

When in use, after medical staff takes out the safe ejection intravenous needle from the sterilized package, the fingers slightly press the bottom 112 of the lock catch 11, so that the upper lock hook 12 is separated from the lock groove 21 of the factory locking position, and the connecting seat 113 on the sheath 1 can slide downwards to the bottom of the chute along the smooth chute formed by combining the upper chute 22 and the lower chute 32 under the action of external force, so that the lower lock hook 13 hooks the lower lock groove 31, and then enters the sheath safety state, as shown in fig. 4. Therefore, the vein needle is safely ejected to complete the preparation work before the blood vessel puncture, and the medical staff can carry out corresponding treatment and application.

When the medical staff finishes using the intravenous needle, the intravenous needle can be discarded, and at this time, the finger slightly presses the bottom 112 position of the lock catch 11 and slightly pulls the lock catch backward, so that the lower lock hook 13 is separated from the lower lock groove 31, thereby releasing the sheath safety state. Then, the finger is released from the bottom 112 of the lock catch 11, and the sheath 1 is ejected upwards along the combination of the upper slide groove 22 and the lower slide groove 32 by the elastic force of the spring 4 to form a through smooth slide groove. Due to the inertia of the ejection, the check sheet 14 will cross the check limiting ring 34, so that the sheath 1 is firmly limited above the top opening end of the base 35, and the sheath 1 completely covers the sharp needlepoint of the needle tube 33, as shown in fig. 5, without the risk of secondary injury. In the above operation, the top 111 of the lock catch 11 can be directly pressed to disengage the lower latch hook 13 from the lower latch slot 31, and the upper latch hook and the lower latch hook are both hooks formed at an angle of 10-70 °.

It should be noted that the above-mentioned solution is only a preferred technical solution, wherein the non-return sheet and the non-return spacing ring may also be replaced by other spacing structures, as long as the spacing function is achieved, and the spring may also use an existing elastic element such as an elastic sheet, which is well known to those skilled in the art, and is not described herein again. The first clamping structure, the second clamping structure and the third clamping structure can also use other clamping structures. In order to facilitate the connection of the catheter, the end of the needle seat which is not connected with the needle tube penetrates out of the base. Of course, the end of the needle holder not connected to the needle tube can be directly connected to the catheter 5. The catheter may also be provided with a luer fitting for ease of use.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A safe ejection intravenous needle comprises a sheath (1), a needle seat (3) and a needle tube (33) fixed on the needle seat, and is characterized by also comprising a base (35), wherein an accommodating cavity is arranged on the base, the needle seat is fixed in the accommodating cavity, and the needle tube is exposed out of the accommodating cavity;

the needle tube is covered by the sheath, the bottom of the needle tube is positioned in the accommodating cavity and is provided with a first limiting structure, the top of the accommodating cavity is provided with a second limiting structure matched with the first limiting structure, an elastic element is arranged in the accommodating cavity, and the elastic element abuts against the bottom end of the sheath;

the top of the base is provided with a first clamping structure, the bottom of the base is provided with a second clamping structure, and the sheath is provided with a third clamping structure matched with the first clamping structure and the second clamping structure;

in an original state, the first clamping structure is connected with the third clamping structure, and under the action of a first external force, the first clamping structure can be separated from the third clamping structure;

first joint structure with under the state that second joint structure breaks away from, and receive the effect of second external force under, the sheath can be to being close to elastic element's direction slides until second joint structure with third joint structure connects for the needle tubing exposes outside the sheath, first external force with second external force is on different directions.

2. The safety ejection intravenous needle as claimed in claim 1, wherein the second latch structure is capable of disengaging from the third latch structure under the action of a third external force, so that the sheath can be restored to the original state under the action of the elastic element, and the third external force is in a different direction from the action force of the elastic element on the sheath.

3. A safety ejection intravenous needle as claimed in claim 1, wherein said first stop structure is a backstop (14) and said second stop structure is a backstop collar (34).

4. A safety ejection intravenous needle as claimed in claim 1 or 2, wherein a lower sliding groove (32) is formed through one side of the base, a lower locking groove (31) is formed at the bottom of the lower sliding groove (32), and the lower locking groove forms the second clamping structure;

the top of the base is provided with a blade (2), the top of the blade is provided with an upper locking groove (21), an upper sliding groove (22) penetrates through the lower part of the upper locking groove, the upper sliding groove is communicated with the lower sliding groove, and the upper sliding groove and the upper locking groove form a first clamping structure;

be provided with padlock (11) on the sheath, padlock (11) top be equipped with go up locked groove complex go up latch hook (12), the bottom be equipped with lower locked groove complex latch hook (13) down, go up the latch hook and set up down, latch hook sets up down, go up the latch hook with lower latch hook becomes third joint structure.

5. A safety ejection intravenous needle as claimed in claim 4, wherein a connecting seat (113) is provided on the latch at a position between the upper latch hook and the lower latch hook, the connecting seat being connected to the sheath;

the connecting seat is in sliding connection with a through sliding groove formed by combining the upper sliding groove (22) and the lower sliding groove (32).

6. A safety ejector intravenous needle as claimed in claim 5, wherein said upper latch hook and said lower latch hook are both hooks formed at an angle of 10-70 °.

7. A safety ejection intravenous needle as claimed in claim 1, wherein said resilient member is a spring (4) which is fitted over said needle holder.

8. A safety ejection intravenous needle as in claim 1, wherein an end of said hub not connected to said needle cannula extends through said base.

9. A safety ejection intravenous needle as claimed in claim 7, characterized in that a catheter (5) is connected to the end of said needle holder not connected to said needle cannula.

10. A safety ejection intravenous needle as claimed in claim 1, wherein said base is cylindrical in shape.