Sheath for packaging disposable medical needling instrument and medical needling instrument assembly with same

Abstract

The utility model discloses a sheath for packaging a disposable medical needle and a medical needle assembly. The sheath includes a first sheath and a second sheath. The first sleeve is in a slender shape and is provided with a first open end, a first closed end and a first containing space, the second sleeve can be connected with the first sleeve through an inserting structure so as to seal the first opening end. The inserting structure comprises an inserting head and a peripheral wall which are arranged on one of the first sleeve and the second sleeve, and a receiving cavity formed in the other one, the peripheral wall surrounds the inserting head, a gap is formed between the peripheral wall and the inserting head, and the end face of the inserting head exceeds the end face of the peripheral wall in the length direction. Under the condition that the connecting plug is connected with the receiving cavity in an inserted mode, the end face of the outer peripheral wall abuts against the end face of the receiving cavity, and the outer peripheral face of the outer peripheral wall is flush with the outer peripheral face of the receiving cavity. According to the scheme, the gap allows the outer peripheral wall to have a thin wall thickness, so that the outer peripheral wall can be rapidly formed in the injection molding process, the possibility of shrinkage is reduced, and formation of a flat surface is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and more specifically, to a sheath for accommodating disposable medical needles and a medical needle assembly having the sheath. Background Art

[0002] Currently, medical needles such as blood collection needles, injection needles, and puncture needles are all disposable. Medical needles are always enclosed in a confined space of a sheath from the time they leave the factory until they are used to ensure hygiene and safety and avoid cross infection. The sheath is usually formed by two parts butted together, and a label is pasted at the seam. Before use, the operator can determine whether the blood collection needle has been used by observing whether the label is intact. In order to facilitate the labeling, the two butted parts of the sheath form a flush surface at the seam. This purpose is usually achieved by increasing the wall thickness of at least one of the two parts of the sheath at the seam.

[0003] However, currently, the sheath is usually made of plastic material by injection molding. The location where the wall thickness increases is prone to severe shrinkage during the molding process, resulting in an uneven surface, which in turn causes the label to be attached unevenly and not firmly. If the label falls off before the medical needle is used, it is easy for the operator to make the wrong judgment that the needle has been used, resulting in waste. Summary of the invention

[0004] The utility model aims to provide a sheath for packaging disposable medical needles, so as to solve the problem that the sheath shrinks during injection molding production and cannot form a flat surface due to excessive wall thickness at the joint between two parts of the sheath.

[0005] According to one aspect of the utility model, the sheath comprises:

[0006] A first sleeve, the first sleeve is configured in an elongated shape and has a first open end and a first closed end opposite to each other in a length direction and a first accommodation space extending from the first open end toward the first closed end; and

[0007] a second sleeve, the second sleeve being configured to be connectable to the first open end of the first sleeve through a plug-in structure to close the first open end;

[0008] The plug-in structure includes a plug connector and a peripheral wall provided on one of the first sleeve and the second sleeve, and a receiving cavity provided on the other of the first sleeve and the second sleeve, the peripheral wall surrounds the plug connector and has a gap with the plug connector, and the end face of the plug connector exceeds the end face of the peripheral wall along the length direction.

[0009] When the plug connector is plugged into the receiving cavity, the end surface of the outer peripheral wall abuts against the end surface of the receiving cavity, and the outer peripheral surface of the outer peripheral wall is flush with the outer peripheral surface of the receiving cavity.

[0010] In some embodiments, a reinforcing rib is provided in the gap, connecting the outer peripheral wall and the plug connector and extending along the length direction. Preferably, the reinforcing rib is provided in plurality and is arranged at intervals along the circumference around the length direction.

[0011] In some embodiments, the gap forms an annular cavity around the plug connector.

[0012] In some embodiments, the gap is closed at one end away from the receiving cavity along the length direction, or the gap is closed at one end toward the receiving cavity along the length direction. Preferably, at least two of the wall thickness of the peripheral wall, the wall thickness of the plug connector, the radial width of the gap, and the thickness of the closed end of the gap along the length direction are equal.

[0013] In some embodiments, the inner edge of the end surface of the receiving cavity is provided with a chamfer.

[0014] In some embodiments, the inner circumferential surface of the receiving cavity is provided with a plurality of ribs extending along the plugging direction of the plug-in structure and arranged at intervals along the circumferential direction. When the plug connector is plugged into the receiving cavity, the ribs abut against the outer circumferential surface of the plug connector.

[0015] In some embodiments, the disposable medical needle is a blood collection needle, which includes a needle seat and a needle rod that penetrates and is fixed on the needle seat, and both ends of the needle rod form puncture ends, wherein the second sleeve is constructed in an elongated shape and has a second open end and a second closed end opposite to each other along the length direction and a second accommodating space extending from the second open end toward the second closed end, and the plug-in structure is respectively arranged at the first open end of the first sleeve and the second open end of the second sleeve.

[0016] In some embodiments, the outer circumference of the first sleeve is provided with an anti-roll rib extending from the first open end toward the first closed end, and / or the outer circumference of the second sleeve is provided with an anti-roll rib extending from the second open end toward the second closed end. Preferably, when observed along the length direction of the sleeve, the projection of the anti-roll rib falls within the projection range of the outer circumferential wall.

[0017] In some embodiments, the needle seat has a flange extending transversely to the needle rod, and the first sleeve or the second sleeve of the receiving cavity is provided with a protruding stopper on the inner circumferential surface of the first accommodating space or the second accommodating space, and when the sheath is used to encapsulate the blood collection needle, the end face of the plug connector and the stopper are respectively abutted against the opposite side surfaces of the flange along the length direction. Preferably, the stopper is configured as a longitudinal rib extending along the length direction, or a transverse rib extending along the circumferential direction. Preferably, the longitudinal ribs include a plurality of ribs and are arranged at intervals along the circumferential direction. Preferably, the transverse ribs extend a full circle along the entire circumference, or the transverse ribs extend along a portion of the entire circumference. When the extension angle of the transverse ribs is less than 180°, at least two transverse ribs can be provided and arranged at intervals along the circumferential direction.

[0018] In some embodiments, the needle seat has a flange extending transversely to the needle rod, a rib extending along the length direction of the needle rod is provided on one side of the flange facing the plug connector, and at least two anti-slip strips are provided on the inner circumference of the plug connector, and when the sheath is used to encapsulate the blood collection needle, the rib is inserted between two adjacent anti-slip strips. Preferably, the gap and the anti-slip strip are flush with each other along the length direction away from the receiving cavity.

[0019] According to another aspect of the utility model, a medical needle assembly is also provided, the assembly comprising the sheath as described above and a disposable medical needle encapsulated in the sheath.

[0020] According to the sheath of the utility model, the following beneficial effects can be achieved:

[0021] The first set and the second set forming the sheath are connected in a plug-in manner through the plug connector and the receiving cavity, and the peripheral wall provided with the outer plug connector abuts against the receiving cavity along the length direction. The peripheral surfaces of the peripheral wall and the receiving cavity form a flush surface. There is a gap between the peripheral wall and the plug connector. That is, the peripheral wall has a thin wall thickness. In this way, the peripheral wall can be quickly formed during the injection molding process, reducing the possibility of shrinkage, which is conducive to forming a flat surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the preferred embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0023] Figure 1 A disposable medical needle is shown;

[0024] Figure 2 is a three-dimensional view of a sheath according to some preferred embodiments of the present utility model;

[0025] Figure 3 yes Figure 2 A perspective view of a first set of sheaths is shown;

[0026] Figure 4 yes Figure 3 A vertical cross-sectional view of the first set shown;

[0027] Figure 5 yes Figure 3 The first set is shown as viewed lengthwise from the open end;

[0028] Figure 6 yes Figure 2 A perspective view of a second set of sheaths is shown;

[0029] Figure 7 yes Figure 6 A vertical cross-sectional view of the second set shown;

[0030] Figure 8 yes Figure 6 The second set is shown as viewed lengthwise from the open end;

[0031] Fig. 9 yes Figure 2 a vertical cross-sectional view of the illustrated sheath in the assembled state; and

[0032] Fig.10 It is a schematic diagram of using the sheath according to the utility model to package a disposable medical needle. DETAILED DESCRIPTION

[0033] Now, with reference to the accompanying drawings, the specific embodiments of the present invention are described in detail. What is described here is only the preferred embodiment of the present invention. Those skilled in the art can think of other ways to implement the present invention based on the preferred embodiment, and the other ways also fall within the scope of the present invention.

[0034] As an example of disposable medical needles, Figure 1A blood collection needle 1 is shown, which includes a needle seat 11 and a needle rod 12. The needle rod 12 can be made of materials such as stainless steel, which penetrates the needle seat 11 and is fixed to the needle seat 11 by, for example, adhesive. The needle rod 12 forms puncture ends at both ends, wherein one end is used to puncture the organism to be drawn blood, which can be called the organism puncture end, and the other end is used to puncture the container containing the blood sample, which can be called the container puncture end. The needle seat 11 is provided with a flange 111 extending transversely to the needle rod 12 at a position approximately in the middle of the needle rod 12 along the length direction of the needle rod 12. With the flange 111 as the boundary, the needle seat 11 is provided with a threaded joint 112 on the side facing the container puncture end, which can be used to connect with a needle holder (not shown). The needle seat 11 is provided with a plurality of ribs 113 arranged at intervals around the needle rod 12 on the side facing the organism puncture end. Each rib 113 extends along the length direction of the needle rod 12. In the illustrated embodiment, the needle seat 11 is provided with four ribs 113, which are arranged at an angle of approximately 90° to each other. Of course, in other embodiments, the number of ribs can be flexibly selected as needed, and the ribs can be arranged evenly or unevenly. The ribs 113 can increase the strength of the needle seat 11 on the one hand, and on the other hand, when the blood collection needle 1 is encapsulated in the sheath, it can cooperate with the corresponding structure in the sheath to keep the blood collection needle 1 fixed in the sheath.

[0035] Figures 2 to 9 The sheath 2 according to some preferred embodiments of the present invention is shown, which can be used to accommodate Figure 1 The blood collection needle 1 shown in the figure. As shown in the figure, the sheath 2 includes two parts, a first sheath 21 (also called an upper sheath) and a second sheath 22 (also called a lower sheath). The first sheath 21 and the second sheath 22 are both configured in an elongated shape to accommodate the needle shaft 12 of the blood collection needle 2.

[0036] Specifically, refer to Figures 3 to 5 The first sleeve 21 has a first open end 211 and a first closed end 212 that are opposite to each other along the length direction, and a first accommodation space 213 extending from the first open end 211 toward the first closed end 212 is formed inside. The first sleeve 21 is provided with a plurality of anti-slip strips 214 protruding from the inner circumference and extending along the length direction of the first sleeve 21 on the inner circumference of the first open end 211. A recess is formed between adjacent anti-slip strips 214. Fig.10As shown, when the blood collection needle 1 is packaged, the biological puncture end of the blood collection needle 1 extends into the first set 21, and the ribs 113 of the needle seat 11 are engaged in the recess between the anti-slip strips 214, so that the blood collection needle 1 remains fixed relative to the first set 21 to prevent the two from rotating relative to each other. Preferably, the number of anti-slip strips 214 can be an integer multiple of the number of ribs 113 on the needle seat 11. For example, four ribs 113 can be provided, and eight anti-slip strips 214 can be provided. In this way, the blood collection needle 1 can have more circumferential angles to be installed in the first set 21. Preferably, the circumferential width of the recess is set to be greater than the circumferential width of the ribs 113. The end of the anti-slip strip 214 facing the opening can also be chamfered. In this way, the needle seat 11 can be more conveniently inserted into the first set 21.

[0037] Refer to Figures 6 to 8 The second sleeve 22 has a second open end 221 and a second closed end 222 opposite to each other along the length direction, and a second accommodating space 223 extending from the second open end 221 toward the second closed end 222 is formed inside. After the blood collection needle 1 is inserted into the first sleeve 21, the other end of the blood collection needle 1 can be inserted into the second sleeve 22 from the second open end 221, and the first sleeve 21 and the second sleeve 22 are connected together through the plug-in structure. In this way, the blood collection needle 1 is encapsulated in the sheath 2. The first sleeve 21 and the second sleeve 22 form a flush surface at the position of the seam between the two, and a label can be attached at this position.

[0038] In order to form a flush surface for pasting labels, the plug-in structure is constructed to include a plug connector 201 and a receiving cavity 202 respectively arranged on the first set 21 and the second set 22. By inserting the plug connector 201 into the receiving cavity 202, the first set 21 and the second set 22 are connected together. Further, the outer peripheral side of the plug connector 201 is also provided with a peripheral wall 203 surrounding it, wherein along the length direction, the end face of the plug connector 201 exceeds the end face of the peripheral wall 203. When plugged in, the end face of the peripheral wall 203 abuts against the end face of the receiving cavity 202, and the outer peripheral surface of the peripheral wall 203 is flush with the outer peripheral surface of the receiving cavity 202. Among them, the peripheral wall 203 and the plug connector 201 are arranged on the same component, and the receiving cavity 202 is arranged on another component. For example, in the illustrated embodiment, the peripheral wall 203 and the plug connector 201 are arranged at the first open end 211 of the first set 21, and the receiving cavity 202 is formed by the second open end 221 of the second set 22. It is understandable that in other embodiments, the peripheral wall and the plug connector may be disposed on the second sleeve, while the receiving cavity may be disposed on the first sleeve.

[0039] like Figures 3 to 5As shown, according to the present invention, there is a gap 204 between the peripheral wall 203 and the plug connector 201. In this way, the first sleeve 21 has a thinner wall thickness at both the peripheral wall 203 and the plug connector 201. During injection molding, the thinner wall thickness can reduce or avoid shrinkage of the peripheral wall 203, so that it forms a flat peripheral surface. Therefore, after plugging, it can form a flush surface with the receiving cavity 202 to facilitate the firm attachment of the label.

[0040] Preferably, a reinforcing rib 205 extending along the length direction of the first set 21 can be provided between the peripheral wall 203 and the plug connector 201 to increase the structural strength of the first set 21 at the corresponding position. A plurality of reinforcing ribs 205 can be provided and arranged at intervals along the circumferential direction. Of course, in other embodiments, the gap can also be arranged to surround a circle to form an annular cavity, that is, the above-mentioned reinforcing ribs are not provided. Preferably, the gap 204 is closed at the end away from the receiving cavity 202. It can be understood that the end of the gap 204 facing the receiving cavity 202 is closed by the end face of the receiving cavity 202 when plugged in. In this way, the gap 204 is formed into a closed environment, which can avoid the accumulation of dust and other debris in the gap 204 during the storage process of the sheath 2. Of course, in other embodiments, the direction of the gap can also be set to be closed at one end of the receiving cavity and open at the other end.

[0041] Preferably, at least two of the wall thickness of the peripheral wall 203, the wall thickness of the plug connector 201, the radial width of the gap 204, and the thickness of the wall for closing the gap (if provided) along the length direction of the sheath are equal. Each part has a uniform wall thickness, thereby more effectively reducing dimensional changes during the injection molding process.

[0042] Furthermore, the ends of both the gap 204 and the anti-slip strip 214 that are away from the receiving cavity 202 in the length direction are preferably flush.

[0043] Refer to Figure 7 and Figure 8 The receiving cavity 202 of the plug-in structure is formed by the second open end 221 of the second sleeve 22, and is used to receive the plug connector 201 and insert it therein. Preferably, the inner edge of the end surface of the receiving cavity 202 is provided with a chamfer 206 to facilitate the insertion of the plug connector 201. In addition, the inner circumferential surface of the receiving cavity 202 is provided with a plurality of ribs 207 extending along the plug-in direction (i.e., the length direction of the sleeve 2) and arranged along the circumferential direction. Fig. 9 As shown, during plugging, the rib 207 abuts against the outer peripheral surface of the plug connector 201. In this way, the contact area between the receiving cavity 202 and the plug connector 201 can be reduced, making the sheath 2 easier to plug and unplug.

[0044] Preferably, a stopper 224 is further formed on the inner circumferential surface of the second sleeve 22, which is arranged at a position farther from the second opening end 221 than the convex rib 207 and has a larger protrusion size relative to the convex rib 207. Fig.10 As shown, when the blood collection needle 1 is packaged, one side of the flange 111 of the needle seat 11 abuts against the end surface of the plug connector 202, and the other side abuts against the stopper 224. In this way, the blood collection needle 1 is fixed relative to the sheath 2 in the length direction.

[0045] In the illustrated embodiment, the stopper 224 is configured as a longitudinal rib extending in the length direction. Preferably, the longitudinal rib includes a plurality of ribs extending substantially in the length direction and arranged at intervals in the circumferential direction. The longitudinal ribs can be arranged at circumferential positions corresponding to the convex ribs 207. These configurations can facilitate demoulding after injection molding. Of course, in other embodiments, the stopper 224 can also be configured as a transverse rib extending in the circumferential direction in the case where smooth demoulding can be ensured. For example, the transverse rib can extend a full circle along the entire circumference. Or the transverse rib can extend along a portion of the entire circumference, that is, extend a certain angle around the axis of the needle rod, such as 30°, 45°, 60°, 90°, 120° or even more than 180°. When the extension angle of the transverse rib is less than 180°, at least two transverse ribs can be provided and arranged at intervals in the circumferential direction.

[0046] In addition, anti-roll ribs 215 are also provided on the outer circumferential surface of the main body of the first set 21, which protrude outward from the outer circumferential surface and extend from the first open end 211 toward the first closed end 212. Anti-roll ribs 225 are also provided on the outer circumferential surface of the main body of the second set 22, which protrude outward from the outer circumferential surface and extend from the second open end 221 toward the second closed end 222. Preferably, a plurality of anti-roll ribs 215 and 225 may be provided, and arranged at intervals along the circumferential direction. In this way, when the cover 2 is placed on a supporting surface (such as a desktop), the anti-roll ribs can prevent the cover 2 from rolling and falling on the supporting surface, and can also play a role in increasing the strength of the cover 2. Of course, in other embodiments, anti-roll ribs may be selectively provided only on one of the first set and the second set. Preferably, refer to Figure 5 and Figure 8 , along the length direction of the jacket 2, the projection of the anti-roll rib 215 falls within the projection range of the outer peripheral wall 203, and the projection of the anti-roll rib 225 falls within the projection range of the receiving cavity 202 (having the same diameter as the outer peripheral wall 203 at the end surface). In this way, the anti-roll rib will not increase the radial size of the jacket.

[0047] The above uses a blood collection needle as an example to introduce the sheath for encapsulating disposable medical needles according to the utility model. It can be understood that in addition to the blood collection needle, the disposable medical needle can also have other forms, such as injection needles, puncture needles, etc. For these medical needles, the sheath according to the utility model is also applicable. Among them, when the needle rod is only arranged on one side of the needle seat, one of the first and second sets of the sheath can be provided with a storage space, but the other is formed as a plug structure for closing the storage space, that is, a corresponding plug structure is provided on the other but it is not necessary to provide a storage space for accommodating the needle rod.

[0048] According to another aspect of the present invention, a medical needle assembly is also provided, which includes the above-mentioned sheath and a disposable medical needle encapsulated in the sheath.

[0049] The above description of various embodiments of the present invention is provided to a person of ordinary skill in the relevant art for the purpose of description. It is not intended to exclude or limit the present invention to a single disclosed embodiment. As above, a person of ordinary skill in the art will understand the various substitutions and variations of the present invention. Therefore, although some alternative embodiments are specifically described, a person of ordinary skill in the art will understand or relatively easily develop other embodiments. The present invention is intended to include all substitutions, modifications and variations of the present invention described herein, as well as other embodiments that fall within the spirit and scope of the present invention described above.

Claims

1. A sheath for encapsulating disposable medical needles, characterized in that: The sheath comprises: A first sleeve (21), the first sleeve (21) being configured in an elongated shape and having a first open end (211) and a first closed end (212) opposite to each other in a length direction, and a first accommodation space (213) extending from the first open end (211) toward the first closed end (212); and a second sleeve (22), the second sleeve (22) being configured to be connectable to the first open end (211) of the first sleeve (21) through a plug-in structure so as to close the first open end (211); The plug-in structure comprises a plug connector (201) and an outer peripheral wall (203) provided on one of the first sleeve (21) and the second sleeve (22), and a receiving cavity (202) provided on the other of the first sleeve (21) and the second sleeve (22); the outer peripheral wall (203) surrounds the plug connector (201) and has a gap (204) between the plug connector (201); an end surface of the plug connector (201) exceeds an end surface of the outer peripheral wall (203) along the length direction; When the plug connector (201) is plugged into the receiving cavity (202), the end surface of the peripheral wall (203) abuts against the end surface of the receiving cavity (202), and the outer peripheral surface of the peripheral wall (203) is flush with the outer peripheral surface of the receiving cavity (202).

2. The sheath according to claim 1, characterized in that A reinforcing rib (205) is provided in the gap (204) and connects the outer peripheral wall (203) and the plug connector (201) and extends along the length direction.

3. The sheath according to claim 2, characterized in that: The reinforcing ribs (205) are provided in plurality and are arranged at intervals along the circumferential direction around the length direction.

4. The sheath according to claim 1, characterized in that The gap (204) forms an annular cavity around the plug connector (201).

5. The sheath according to claim 1, characterized in that The gap (204) is closed at one end away from the receiving cavity (202) along the length direction, or the gap (204) is closed at one end toward the receiving cavity (202) along the length direction.

6. The sheath according to claim 5, characterized in that At least two of the wall thickness of the outer peripheral wall (203), the wall thickness of the plug connector (201), the radial width of the gap (204) and the thickness of the closed end of the gap (204) along the length direction are equal.

7. The sheath according to claim 1, characterized in that The inner edge of the end surface of the receiving cavity (202) is provided with a chamfer (206).

8. The sheath according to claim 1, characterized in that The inner circumferential surface of the receiving cavity (202) is provided with a plurality of convex ribs (207) extending along the plugging direction of the plugging structure and arranged at intervals along the circumferential direction; when the plug connector (201) is plugged into the receiving cavity (202), the convex ribs (207) abut against the outer circumferential surface of the plug connector (201).

9. The sheath according to any one of claims 1 to 8, characterized in that The disposable medical needle is a blood collection needle (1), which comprises a needle seat (11) and a needle rod (12) penetrating and fixed on the needle seat (11), wherein both ends of the needle rod (12) form puncture ends. The second sleeve (22) is configured to be elongated and has a second open end (221) and a second closed end (222) opposite to each other along the length direction, and a second accommodation space (223) extending from the second open end (221) toward the second closed end (222). The plug-in structures are respectively arranged at the first open end (211) of the first sleeve (21) and the second open end (221) of the second sleeve (22).

10. The sheath according to claim 9, characterized in that The outer circumferential surface of the first sleeve (21) is provided with an anti-roll rib (215) extending from the first open end (211) toward the first closed end (212), and / or the outer circumferential surface of the second sleeve (22) is provided with an anti-roll rib extending from the second open end (221) toward the second closed end (222).

11. The sheath according to claim 10, characterized in that When observed along the length direction of the sleeve, the projection of the anti-roll rib falls within the projection range of the outer peripheral wall (203).

12. The sheath according to claim 9, characterized in that The needle seat (11) has a flange (111) extending transversely to the needle rod (12), and the first sleeve (21) or the second sleeve (22) of the receiving cavity (202) is provided with a protruding stopper (224) on the inner peripheral surface of the first accommodating space (213) or the second accommodating space (223). When the sheath (2) is used to encapsulate the blood collection needle (1), the end face of the plug connector (201) and the stopper (224) respectively abut against the opposite side faces of the flange (111) along the length direction.

13. The sheath according to claim 12, characterized in that The stopper (224) is configured as a longitudinal rib extending in the length direction, or a transverse rib extending in the circumferential direction.

14. The sheath according to claim 9, characterized in that The needle seat (11) has a flange (111) extending transversely to the needle rod (12), and a rib (113) extending along the length direction of the needle rod (12) is provided on the side of the flange (111) facing the plug connector (201). The inner peripheral surface of the plug connector (201) is provided with at least two anti-slip strips (214). When the sheath (2) is used to encapsulate the blood collection needle (1), the rib (113) is inserted between two adjacent anti-slip strips (214), wherein the ends of the gap (204) and the anti-slip strip (214) facing away from the receiving cavity (202) along the length direction are flush.

15. A medical needle assembly, characterized in that: The assembly comprises a sheath (2) according to any one of claims 1 to 14 and a disposable medical needle encapsulated in the sheath.

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