CN102091372A - Structure of sheath cover for syringe needle - Google Patents

Abstract

A protective cover structure for the needle of injector is composed of a tubular body with a slide slot and a needle holder with a boss, and a locating slot with locating part. The tube body is sleeved on the injector, so that the protruding block of the needle base enters the sliding groove, when the protruding block is positioned at the top edge of the sliding groove, the needle head is exposed out of the upper edge of the tube body, after the injector extracts the liquid medicine and before the injection use, the tube body is moved to enable the protruding block to slide into the positioning groove, and a temporary positioning state of the tube body covering the needle head is formed, so that external pollution and false puncture after the injector extracts the liquid medicine and before the injection use are prevented; when the injector is used, the tube body is slid to make the lug block be blocked in the positioning portion, and the lug block can not be moved reversely to form irreversible positioning, so that the tube body is covered on the needle head, and the medical care personnel can be prevented from being punctured by the needle head due to careless operation when taking the injector, and the injector can be used more safely.

Description

Syringe needle shield cap structure

technical field

The present invention relates to a syringe, in particular to a syringe needle sheath cover structure that can form a covering for the needle to prevent medical personnel from being stabbed by the needle due to careless operation when taking it, and to make the use of the syringe safer .

Background technique

A general medical syringe is usually provided with a protective cover on the needle part. Before the syringe is used, the protective cover is placed on the needle holder to cover the needle. The protective cover structures of these known syringes all constitute an irreversible safety protection function after the syringe is used, that is, in order to prevent accidental infection after use, the use of the safety protective cover must be used for one time and cannot be restored; However, in practice, the injection operation of the medical staff first removes the protective cover at the nursing station, extracts the medicine, and then sends it to the ward to inject the patient. The protective cover is used for one-time use to limit the non-returnable operation requirements, and the sheath is set aside and not used, so that the needle is exposed. In this way, the probability of needle stabbing or external contamination is relatively increased. And when the injection is completed, then use the protective cover to cover back or use a disposable safety protective cover to prevent other personnel from being stabbed. In view of this, the inventor has been engaged in this business for many years, and after continuous research and experiments, he developed a needle sheath cover structure, so that medical staff can avoid external pollution and contamination after taking, operating and using it. Injured by a needle inadvertently.

Contents of the invention

The main purpose of the present invention is to provide a syringe needle shield cover structure, so that the needle of the syringe can be covered temporarily and permanently by means of the tube body, so as to prevent the medical staff from taking, using and after use. Injured by needles due to careless operation, which makes the use of syringes safer.

To achieve the above object, the present invention provides a syringe needle shield cover structure, which comprises:

A pipe body, an opening is provided at the end of the bottom edge, a chute of a preset length is extended from the opening, a locking part is provided at a preset position of the chute, and a positioning groove is extended from the locking part, the positioning The groove further extends a positioning hole, and a positioning part is arranged between the positioning groove and the positioning hole;

A needle seat, which is installed at the end of the syringe, for the needle to be embedded and fixed, and is provided with a protrusion;

By the combination of the above-mentioned components, the tube body is placed on the syringe, and the protrusion of the needle seat enters through the opening of the tube body, and then pushes against the top edge of the chute through the locking part, and makes the needle protrude from the tube body When the syringe draws medicine or injects it, the protrusion can be used to move in the chute to form the tube body to rise, the protrusion is placed in the positioning hole through the positioning part, and is locked at the positioning part to form an irreversible tube body The permanent positioning of the recovery allows the tube to cover the needle to prevent accidental operation after injection from being stabbed by the needle, thus making the use of the syringe safer.

In the structure of the syringe needle sheath cover, wherein, the locking part protrudes inward from the two sides of the chute respectively, and the lower edge is an inclined part, and the upper edge is a hook of a horizontal part.

In the structure of the syringe needle sheath cover, the locking part is provided with a cutout hole on the wall surface of the tube body adjacent to the hook to make the hook elastic.

In the structure of the syringe needle shield cover, the positioning part is a hook protruding inward from both sides of the positioning hole, one side is an inclined part, and the other side is a horizontal part.

In the structure of the syringe needle sheath cover, the positioning part is provided with a cutout hole on the wall surface of the tube body adjacent to the hook to make the hook elastic.

In the structure of the syringe needle sheath cover, there is a chamfered section at the bottom of the opening to facilitate the smooth entry of the protrusion of the needle holder.

In the structure of the syringe needle shield cover, the upper edge of the projection provided on the needle seat is tapered to facilitate passage through the locking part of the tube body.

In the structure of the syringe needle sheath cover, wherein, the positioning groove between the sliding groove and the positioning part is provided with a protruding point, so that the protruding block arranged on the needle seat passes through the protruding point along the positioning groove to form a reversible temporary positioning, Use a protective syringe to protect against external contamination and accidental punctures after extracting the liquid medicine and before injection.

In the syringe needle shield cover structure, one side of the projection provided on the needle seat is pointed, so as to facilitate passing through the positioning part of the tube body.

The present invention also provides a syringe needle shield cover structure, which comprises:

A pipe body, an opening is provided at the end of the bottom edge, a chute of a predetermined length is provided at a preset position, a positioning slot is extended at the preset position of the chute, a positioning hole is extended from the positioning slot, and a positioning hole is inserted in the positioning slot There is a positioning part between the positioning hole; and the thickness of the internal pipe wall of the pipe body from the bottom of the chute and the positioning groove to the opening section of the bottom edge of the pipe body gradually becomes thinner from top to bottom;

A needle seat, which is installed at the end of the syringe for the needle to be embedded and fixed, and is provided with a protrusion, and the protrusion is provided with an upward slope;

With the combination of the above-mentioned components, when in use, the tube body is inserted into the syringe from top to bottom, so that the protrusion gradually becomes thinner from the inner wall of the bottom edge opening of the tube body, and slides with the slope of the protrusion, so that the protrusion The block slides into the chute, and then the protrusion is pushed against the top edge of the chute, so that the needle protrudes from the upper edge of the tube body. The positioning groove is placed in the positioning hole through the positioning part, and is locked to the positioning part to form a permanent positioning that cannot be reversed, so that the tube body rises and covers the needle, so as to prevent the medical staff from being caught by the needle due to careless operation when taking it. puncture wounds, making syringe use safer.

In the structure of the syringe needle shield cover, the positioning part protrudes inward from both sides of the positioning hole, forming a hook with one side being an inclined part and the other side being a horizontal part.

In the structure of the syringe needle sheath cover, the positioning part is provided with a cutout hole on the wall surface of the tube body adjacent to the hook to make the hook elastic.

In the structure of the syringe needle sheath cover, wherein, the positioning groove between the sliding groove and the positioning part is provided with a protruding point, so that the protruding block arranged on the needle seat can be retrogradely restored and temporarily positioned by the protruding point along the positioning groove, so as to Protect the syringe from external contamination and accidental punctures after the liquid is drawn from the syringe and before injection.

In the syringe needle shield cover structure, one side of the projection provided on the needle seat is pointed, so as to facilitate passing through the positioning part of the tube body.

The beneficial effect of the present invention is that the syringe needle sheath cover structure is formed by the tube body provided with the slotted hole, the locking part and the positioning part in cooperation with the protrusion provided on the needle seat, so that the needle of the syringe can be covered with It prevents medical personnel from external contamination or mistakenly being stabbed by needles after extracting liquid medicine, injection, etc., thus making the use of syringes safer.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the present invention;

Fig. 2 is a pipe perspective view of the present invention;

Fig. 3 is a diagram of an embodiment of the tube sleeve of the present invention placed in a syringe;

4A and B are diagrams of embodiments of the temporary positioning of the tube-covered needle of the present invention;

Fig. 5 is a diagram of an embodiment of the permanent positioning of the tube-covered needle of the present invention;

Fig. 6 is a perspective view of another embodiment of the pipe body of the present invention;

Fig. 7 is a perspective view of another embodiment of the pipe body of the present invention;

8A and B are diagrams of another embodiment of the tube sleeved in the syringe of the present invention.

Explanation of reference signs: 1-pipe body; 11-opening; 111-oblique section; 12-chute; 121-protruding point; 13-locking part; ;15-positioning slot; 151-hook; 152-hook; 16-positioning hole; 17-positioning part; 171-hook; 172-hook; 18-cut hole; ; 21 - bump; 3 - syringe; 4 - needle.

Detailed ways

Please refer to FIG. 1 and FIG. 2 at the same time, which are the three-dimensional exploded view and the three-dimensional view of the pipe body of the present invention. As shown in the figure, the present invention mainly includes a tube body 1 and a needle hub 2 provided with a protrusion 21, wherein an opening 11 is provided at the bottom edge of the tube body 1, and a chamfer is provided at the bottom end of the opening 11. Segment 111, a chute 12 of appropriate length is extended from the opening 11, and a locking part 13 is provided at a suitable position of the chute 12, and the locking part 13 is respectively inward from both sides of the chute 12. The lower edge of the protrusion is set as an inclined part to facilitate the passage of the protrusion 21, and the upper edge is a horizontal part to prevent the triangular hooks 131 and 132 of the protrusion 21 from going backwards. The hole 14 makes the hook 131 form proper elasticity;

A positioning groove 15 is extended from the locking portion 13, and a positioning hole 16 is extended from the positioning groove 15. A positioning portion 17 is arranged between the positioning groove 15 and the positioning hole 16, wherein the positioning portion 17 is defined by the positioning hole 16. The two sides protrude inward, and one side is set as an inclined part to facilitate the passage of the protrusion, and the other side is set as a flat part to prevent the protrusion from going backwards. The hooks 171 and 172, which are generally triangular in shape, are adjacent to the hook 171. The wall surface of the pipe body 1 is provided with a sectional hole 18, so that the hook 171 forms an appropriate elasticity; a protruding point 121 (Fig. 4A) is provided between the chute 12 and the positioning part 17, so that the protruding block 21 can pass through and can be retrogradely restored. temporarily positioned.

The needle holder 2 is for being mounted on the end of the syringe 3 for the needle head 4 to be embedded and fixed, and a protruding block 21 is provided at an appropriate position, and one side of the protruding block 21 is along the direction of the positioning hole 16 (upward, toward lower or transverse) is a pointed portion, and the other side is a flat portion; for the pointed portion of the protrusion 21 to pass through the positioning portion 17 and enter the positioning hole 16, and prevent the protrusion 21 from retrogradely exiting the positioning hole by virtue of the flat portion on the other side 16.

By virtue of the combination of the aforementioned components, the tube body 1 is placed on the syringe 3, and the protrusion 21 of the needle holder 2 enters along the opening 11, and then pushes against the top edge of the chute 12 through the locking part 13, and the needle head 4 protruding from the upper edge of the pipe body. Wherein, since the bottom end of the opening 11 is provided with a chamfered section 111, the protruding block 21 can enter smoothly, and the upper edge of the locking part 13 is a horizontal part, so that the protruding block 21 can be prevented from retrogradely retreating. After the syringe extracts the liquid medicine and before injection, the protrusion 21 slides along the chute 12 and the positioning groove 15 and passes through the protrusion 121 by moving the tube body 1, so that the tube body covers the needle upwards, and the tube body 1 utilizes the protrusion 21 The locking of the protruding point 121 forms the temporary positioning state of the tube body 1 covering the needle, so as to prevent the medical staff from being stabbed by the needle 4 due to careless operation when taking it, and to avoid the risk of contamination due to the exposure of the needle 4; When injecting, then move the tube body 1 to make the protrusion 21 retrogradely return through the protrusion point 121, and return to the top edge of the chute, and the needle is exposed again for injection; and when the syringe 3 is used for injection, move the tube body 1 so that The protrusion 21 moves in the chute 12 to form the rise of the tube body 1, so that the protrusion 21 arranged on the needle holder 2 is placed in the positioning hole 16 through the positioning part 17 along the positioning groove 15, and is locked on the positioning part 17. And by virtue of the flat part of the protrusion 21 and the positioning part 17, the irreversible permanent positioning state of the protrusion 21 is formed, so that the tube body 1 is permanently covered on the needle 4, so as to prevent infection from being stabbed by the needle 4 after injection, and then make the syringe 3 is safer to use.

Please refer to FIG. 3 , which is a diagram of an embodiment of the tube sleeved in the syringe of the present invention. As shown in the figure, when the present invention is in use, the tube body 1 is placed on the syringe 3, so that the protrusion 21 of the needle holder 2 enters through the opening 11, and then passes through the locking part 13, wherein the locking part 13 is in the The two sides of the chute 12 are respectively provided with hooks 131, 132 protruding inward in a roughly triangular shape, and a cut-away hole 14 is provided on the wall of the pipe body 1 adjacent to the hook 131, so that the hook 131 forms proper elasticity. And the upper edge of the protrusion 21 is pointed, so that the protrusion 21 can pass through smoothly, butt against the top edge of the chute 12, the flat part of the protrusion 21 and the horizontal part of the locking part 13 can prevent the protrusion from 21 retrograde back.

Please refer to FIG. 4A , FIG. 4B and FIG. 5 , which are diagrams of an embodiment of the tube covering the needle of the present invention. As shown in the figure, when the syringe 3 draws medicine or injects it, slide the protrusion 21 along the sliding groove 12, slide the tube body 1 upward to cover the needle 4, and then slide on the protrusion 21 onto the locking part 13 At the edge, the protrusion 21 passes along the positioning groove 15 behind the protrusion 121 and in front of the locking part 17, forming a temporary positioning where the tube body 1 covers the needle 4 for protection and can be retrogradely restored after the liquid medicine is extracted and before the injection; 21. Pass the positioning part 17 along the positioning groove 15, wherein since the positioning part 17 protrudes inwards from the two sides of the positioning hole 16, the roughly triangular hooks 171, 172 are provided on the wall of the pipe body 1 adjacent to the locking hook 171. There is a cut-away hole 18 to make the hook 171 form proper elasticity, so that the protrusion 21 can pass through smoothly and be placed in the positioning hole 16, and because of the flat part of the protrusion 21 and the positioning part 17, the protrusion 21 is formed. In the positioning state, it is locked on the positioning portion 17, so that the tube body 1 is covered with the needle 4, so as to prevent being stabbed by the needle 4 with permanent protection, thereby making the use of the syringe safer.

Please refer to FIG. 6 , which is a perspective view of another embodiment of the pipe body of the present invention. As shown in the figure, in the pipe body 1 of the present invention, the positioning grooves 15 can directly protrude inward from the two sides respectively, and roughly triangular hooks 151, 152 are provided on the wall surface of the pipe body 1 adjacent to the hook 151. There is a cut-away hole 19 to make the hook 151 form proper elasticity, so that the protrusion 21 of the needle holder 2 can pass through smoothly, and be placed behind the hook 151, 152, and be locked on the hook 151, 152.

Please refer to FIG. 7 , which is a perspective view of another embodiment of the pipe body of the present invention. As shown in the figure, the positioning groove 15 of the present invention can extend a positioning hole 16 from the positioning groove 15, and a positioning portion 17 is arranged between the positioning groove 15 and the positioning hole 16, wherein the positioning portion 17 is formed by the positioning hole 16. The hooks 171 and 172 protrude inward from the sides respectively, and the wall surface of the tube body 1 adjacent to the hook 171 is provided with a cut-away hole 18, so that the hook 171 forms proper elasticity, and the protrusion of the needle holder 2 21 can pass through smoothly, be placed in the positioning hole 16, and be locked in the positioning hole 16.

Please refer to FIGS. 8A-B , which are perspective views of the tube body and the hub cover of the present invention and another embodiment. From the bottom of the chute 12 and the positioning groove 15 to the opening 11 and the chamfered section 111 of the tube body 1, the inner tube wall of the tube body 1 is gradually thinned from top to bottom to the lower edge of the tube body, and the The protrusion 21 on the 2 is provided with a slope that is thin on the top and thick on the bottom. When in use, the tube body 1 is inserted into the needle holder 2 from top to bottom, so that the protrusion 21 is aligned with the gradually thinning part of the inner tube wall of the tube body 1, and can just produce a sliding action with the slope of the protrusion 21, so that the protrusion The block 21 slides into the chute 12 . Move the tube body 1 so that the protrusion 21 passes through the chute 12 and the positioning groove 15 successively so that it is located behind the protrusion 121 or behind the positioning part 17 to form a tube body 1 that is temporarily positioned by the protrusion 121 or permanently positioned by the positioning part 17 Covering the protection of the needle 4, wherein, the positioning part 17 is a triangular-shaped hook 171, 172 protruding inward from the two sides of the positioning hole 16, and a section is provided on the wall of the tube body 1 adjacent to the hook 171. The hole 18 makes the hook 171 form proper elasticity, so that the protrusion 21 of the needle holder 2 can pass through smoothly, be placed in the positioning hole 16, and be locked in the positioning hole 16.

In the aforementioned embodiments, the protruding block, locking portion and positioning portion can be in other different types. Therefore, the aforementioned embodiments are only to illustrate preferred implementation modes of the present invention, rather than to limit the scope of the present invention. All through slight modifications and changes, the gist of the present invention is still not lost, nor does it depart from the spirit category of the present invention.

To sum up, in the present invention, the tubular body provided with slotted holes, locking parts, and positioning parts cooperates with the protrusions provided on the needle seat to form a syringe needle sheath cover structure, so that the needle of the syringe can be covered and It prevents medical personnel from external contamination or mistakenly being stabbed by needles after extracting liquid medicine, injection, etc., thus making the use of syringes safer.

Only the above-mentioned ones are only preferred embodiments of the present invention, and should not limit the scope of the present invention. Therefore, all changes in numerical values or replacement of equivalent components, or equivalents made according to the patent scope of the present invention Changes and modifications should still belong to the category covered by the patent of the present invention.

Claims (14)

1. A syringe needle shield cover structure, characterized in that it comprises: A pipe body, an opening is provided at the end of the bottom edge, a chute of a preset length is extended from the opening, a locking part is provided at a preset position of the chute, and a positioning groove is extended from the locking part, the positioning The groove further extends a positioning hole, and a positioning part is arranged between the positioning groove and the positioning hole; A needle seat, which is installed at the end of the syringe, for the needle to be embedded and fixed, and is provided with a protrusion; The tube body is placed on the syringe, and the protrusion of the needle holder enters through the opening of the tube body, and then pushes against the top edge of the chute through the locking part, so that the needle protrudes from the upper edge of the tube body, and when the syringe is withdrawn After the drug or injection is used, the protrusion can be used to move in the chute to form the rise of the tube body. The protrusion is placed in the positioning hole through the positioning part and locked in the positioning part to form a permanent positioning of the tube body that cannot be reversed. The tube body covers the needle. 2. The syringe needle shield cover structure according to claim 1, characterized in that, the locking part protrudes inward from the two sides of the chute respectively so that the lower edge is an inclined part and the upper edge is a horizontal part. The hook. 3 . The syringe needle shield cover structure according to claim 2 , wherein the locking portion is provided with a cut-away hole on the wall surface of the tube body adjacent to the hook to make the hook elastic. 4 . 4. The syringe needle shield cover structure according to claim 1, characterized in that, the positioning part protrudes inward from the two sides of the positioning hole respectively, so that one side is an inclined part and the other side is a horizontal part The hook. 5 . The syringe needle shield cover structure according to claim 4 , wherein the positioning portion is provided with a cutout hole on the wall of the tube body adjacent to the hook to make the hook elastic. 6 . 6 . The needle shield cover structure for a syringe according to claim 1 , wherein a beveled section is provided at the bottom of the opening to facilitate the smooth entry of the protrusion of the needle holder. 6 . 7 . The needle shield cover structure for a syringe according to claim 1 , wherein the upper edge of the projection provided on the needle seat is tapered to facilitate passing through the locking portion of the tube body. 8 . 8. The syringe needle shield cover structure according to claim 1, characterized in that, the positioning groove between the chute and the positioning part is provided with a protruding point, so that the protruding block arranged on the needle seat passes through the protruding point along the positioning groove Temporary positioning for reversible recovery is formed. 9 . The needle shield cover structure for a syringe according to claim 1 , wherein one side of the projection provided on the needle seat is pointed to facilitate passage through the positioning portion of the tube body. 10 . 10. A syringe needle shield cover structure, characterized in that it comprises: A pipe body, an opening is provided at the end of the bottom edge, a chute of a predetermined length is provided at a preset position, a positioning slot is extended at the preset position of the chute, a positioning hole is extended from the positioning slot, and a positioning hole is inserted in the positioning slot There is a positioning part between the positioning hole; and the thickness of the internal pipe wall of the pipe body from the bottom of the chute and the positioning groove to the opening section of the bottom edge of the pipe body gradually becomes thinner from top to bottom; A needle seat, which is installed at the end of the syringe for the needle to be embedded and fixed, and is provided with a protrusion, and the protrusion is provided with an upward slope; The tube body is inserted into the syringe from top to bottom, so that the protrusion is gradually thinned from the inner tube wall of the opening of the bottom edge of the tube body, and has a sliding action with the slope of the protrusion, so that the protrusion slides into the chute, and then the The protrusion is pushed against the top edge of the chute, so that the needle protrudes from the upper edge of the tube body, and when the syringe is used for injection, the protrusion on the needle seat is placed in the positioning hole through the positioning part along the chute and the positioning groove , and is locked at the positioning part to form a permanent positioning that cannot be reversed, so that the tube rises and covers the needle. 11. The syringe needle shield cover structure according to claim 10, characterized in that, the positioning part protrudes inward from the two sides of the positioning hole respectively, so that one side is an inclined part and the other side is a horizontal part. hook. 12 . The needle shield cover structure for a syringe according to claim 10 , wherein the positioning portion is provided with a cut-out hole on the wall of the tube body adjacent to the hook to make the hook elastic. 13 . 13. The syringe needle shield cover structure according to claim 10, characterized in that, the positioning groove between the chute and the positioning part is provided with a protruding point, so that the protruding block arranged on the needle seat passes through the protruding point along the positioning groove Form a temporary positioning that can be retrogradely restored. 14 . The needle shield cover structure for a syringe according to claim 10 , wherein one side of the projection provided on the needle seat is pointed to facilitate passage through the positioning portion of the tube body. 15 .

Images