Infusion port butterfly needle

Abstract

The utility model discloses a butterfly needle for an infusion port, and relates to the field of medical instruments. The infusion port butterfly needle comprises a needle handle, a needle head and a butterfly wing, the needle head is connected and perpendicular to the front end of the needle handle, and the butterfly wing is connected with the needle handle. The supporting assembly comprises a supporting seat, a supporting rod group and a limiting piece; the supporting seat is arranged below the needle handle and is in the same direction with the needle handle, a needle penetrating hole is formed in the end, close to the needle head, of the supporting seat in a penetrating mode, and the needle head penetrates through the needle penetrating hole and is matched with the needle penetrating hole. Two sliding grooves in the same direction as the supporting base are formed in the supporting base in a spaced mode. The upper wall and the lower wall of each sliding groove are each provided with a plurality of limiting grooves formed in the sliding groove direction at intervals. The supporting rod sets and the sliding grooves are arranged in a one-to-one correspondence mode, the two supporting rod sets form a splayed structure, the upper ends of the supporting rod sets are hinged to the needle handle, and the lower ends of the supporting rod sets can slide in the sliding grooves so that the lower ends of the two supporting rod sets can be close to or away from each other; the limiting piece can be inserted into the limiting groove to prevent the lower end of the supporting rod set from moving.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a butterfly needle for an infusion port. Background Art

[0002] An infusion port is a vascular access system completely implanted subcutaneously, providing patients with long-term venous access. It primarily consists of a catheter located in the superior vena cava and a subcutaneous injection port. The infusion port butterfly needle, also known as a butterfly wing needle or butterfly-shaped non-invasive needle, is a specialized puncture needle used with the infusion port. During infusion port use, the butterfly needle penetrates the skin into the injection port, connecting to the catheter and establishing venous access. After treatment, the butterfly needle is removed, leaving no catheter or needle outside the body, and the patient's daily life remains unaffected.

[0003] The butterfly needle is connected to the infusion port, that is, after the butterfly needle is inserted into the injection seat, the butterfly needle needs to be fixed. Figure 1 As shown, there is a certain gap between the needle handle of the butterfly needle and the patient's skin, and a flexible pad needs to be placed between the two ( Figure 1 Then lay the butterfly needle flat and cover with a transparent dressing ( Figure 1 b) and apply the transparent dressing to the patient's skin, pressing the port firmly against the infusion port. The flexible pad is typically made by a nurse by folding gauze. The distance between the butterfly needle handle and the skin varies between patients, and the thickness of the flexible pad is difficult to precisely match the gap between the butterfly needle handle and the patient's skin. Therefore, placing the flexible pad between the needle handle and the patient's skin is a complex operation.

[0004] In addition, after the infusion is stopped and the butterfly needle is pulled out, the needle tip of the butterfly needle is exposed, which can easily cause needle stick injuries during the subsequent disposal of the butterfly needle. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an infusion port butterfly needle which does not require a flexible pad when connected to an infusion port.

[0006] The technical solution adopted by the utility model is: the butterfly needle of the infusion port includes a needle handle, a needle head and a butterfly wing, the needle head is connected to the front end of the needle handle and is perpendicular, and the butterfly wing is connected to the needle handle; it also includes a support assembly, the support assembly includes a support seat, a support rod group and a limit plate; the support seat is arranged below the needle handle and in the same direction as the needle handle, and a needle hole is penetrated through the end of the support seat close to the needle head, and the needle head passes through the needle hole and cooperates with the needle hole; two slide grooves in the same direction as the support seat are arranged at intervals on the support seat, and the upper and lower walls of the slide groove are provided with a plurality of limit grooves arranged at intervals along the direction of the slide groove; the support rod group is arranged in a one-to-one correspondence with the slide groove, and the two support rod groups form an "eight"-shaped structure, the upper end of the support rod group is hinged to the needle handle, and the lower end of the support rod group can slide in the slide groove to make the lower ends of the two support rod groups approach or move away from each other; the limit plate can be inserted into the limit groove to prevent the lower end of the support rod group from moving.

[0007] Furthermore, the support rod group includes a connecting shaft and two support rods; the two support rods are respectively arranged on both sides of the support seat; the two support rods are hinged to the needle handle, and the connecting shaft passes through the slide groove and is connected to the two support rods.

[0008] Furthermore, a groove connected to the needle hole is provided on the support seat, and a needle blocking structure is provided in the groove; when the needle is located above the needle blocking structure, the needle blocking structure can block the needle to prevent the needle from moving downward.

[0009] Furthermore, the needle blocking structure includes a baffle and an elastic member; the baffle is located in the groove and between the needle and the bottom of the groove, the elastic member is located between the baffle and the bottom of the groove, the elastic member is deformed, and the elastic force of the elastic member causes the baffle to rest against the needle.

[0010] Furthermore, the butterfly needle of the infusion port includes a connecting piece, which is connected to the needle handle and the support seat. The connecting piece is used to limit the extreme position of the support seat's downward movement to prevent the support seat from moving downward and away from the needle head; the support seat has a connecting shaft removal outlet, which extends from the upper surface of the support seat to the inner end of the slide groove.

[0011] Furthermore, the connecting piece includes a flexible sheet and two hard sheets, the two hard sheets are connected via the flexible sheet, and the two hard sheets are respectively connected to the needle handle and the support seat via the flexible sheet.

[0012] The beneficial effects of the present invention are as follows: 1. When the present invention is used, the needle is first inserted into the injection seat, which is the part of the infusion port that is inserted into the human body and belongs to the existing technology, and its structure is not described in detail; then the support rod group is rotated to drive the lower end of the support rod group to move in the slide groove of the support seat, so that the lower ends of the two support rod groups are close to each other, and then the support seat is driven away from the needle handle and close to the patient's skin; when the support seat is in contact with the skin, the limiting plate is inserted into the limiting groove; then the transparent patch is covered on the butterfly needle and pasted on the patient's skin; in this way, the butterfly needle fixing operation is completed, and the support assembly is cushioned between the needle handle of the butterfly needle and the patient's skin, and the downward pressure of the transparent patch fixes the butterfly needle. The limiting plate limits the movement of the support rod group, which can ensure the effective support of the support rod group and prevent the needle handle from moving downward.

[0013] After the utility model is connected to the infusion port, it is no longer necessary to use a flexible pad to support the needle handle, thus eliminating the need for making the flexible pad. By inserting the limiting piece into different limiting slots and the angle of the support rod group being different, it can adapt to different distances between the needle handle and the skin.

[0014] 2. A needle protection structure is further provided on the support base so that after the butterfly needle is pulled out, the needle is shielded in the needle hole, avoiding the risk of needle puncture or even infection of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a diagram of the existing infusion port butterfly needle connection and fixation status;

[0016] Figure 2 This is a structural diagram of the butterfly needle of the infusion port of the utility model (initial state);

[0017] Figure 3 This is a structural diagram of the butterfly needle of the infusion port of the utility model (fixed state);

[0018] Figure 4 This is a structural diagram of the butterfly needle of the infusion port of the utility model (needle removal state);

[0019] Figure 5 for Figure 1 AA section view;

[0020] Figure 6 for Figure 1 BB cross-sectional view.

[0021] Figure 7 It is a cross-sectional view of the support seat;

[0022] Figure 8 It is the structural diagram of the connector;

[0023] Figure numerals: needle handle 1, needle 2, butterfly wing 3, support assembly 4, support seat 41, slide groove 411, limiting groove 412, connecting shaft removal outlet 413, groove 414, needle hole 415, support rod group 42, support rod 421, connecting shaft 422, limiting plate 43, connecting part 5, hard plate 51, flexible plate 52, needle blocking structure 6, partition plate 61, elastic part 62. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings.

[0025] like Figure 2 As shown, the butterfly needle of the infusion port includes a needle handle 1, a needle head 2 and a butterfly wing 3. The needle head 2 is connected to the front end of the needle handle 1 and is perpendicular to the butterfly wing 3. The butterfly wing 3 is connected to the needle handle 1; it also includes a support assembly 4, which includes a support base 41, a support rod group 42 and a limit plate 43; the support base 41 is arranged below the needle handle 1 and in the same direction as the needle handle 1, and a needle hole 415 is formed through the end of the support base 41 close to the needle head 2, and the needle head 2 passes through the needle hole 415 and cooperates with the needle hole 415; two support rods are provided on the support base 41 at intervals. The support base 41 has a slide groove 411 in the same direction, and the upper and lower walls of the slide groove 411 are provided with a plurality of limit grooves 412 arranged at intervals along the direction of the slide groove 411; the support rod groups 42 are arranged in a one-to-one correspondence with the slide groove 411, and the two support rod groups 42 form an "eight"-shaped structure. The upper end of the support rod group 42 is hinged to the needle handle 1, and the lower end of the support rod group 42 can slide in the slide groove 411 so that the lower ends of the two support rod groups 42 are close to or away from each other; the limit plate 43 can be inserted into the limit groove 412 to prevent the lower end of the support rod group 42 from moving.

[0026] When the utility model is used, Figure 2 As shown, the needle 2 is inserted into the injection seat; then the support rod group 42 is rotated to drive the lower end of the support rod group 42 to move in the slide groove 411 of the support seat 41, so that the lower ends of the two support rod groups 42 are close to each other, thereby driving the support seat 41 away from the needle handle 1 and close to the patient's skin; when the support seat 41 is in contact with the skin, the limiting plate 43 is inserted into the limiting groove 412; then the transparent dressing is covered on the butterfly needle and adhered to the patient's skin; this completes the butterfly needle fixing operation, and the support assembly 4 is cushioned between the needle handle 1 of the butterfly needle and the patient's skin, and the downward pressure of the transparent dressing fixes the butterfly needle. The limiting plate 43 limits the movement of the support rod group 42, which can ensure that the support rod group 42 is effectively supported and prevent the needle handle 1 from moving downward.

[0027] After connecting the present invention to the infusion port, the needle handle 1 no longer needs to be padded with a flexible pad, eliminating the need for manufacturing the pad. By inserting the stopper 43 into different stop slots 412 and varying the angle of the support rod assembly 42, the needle handle 1 can be positioned at varying distances from the skin. Because the present invention is covered with a transparent dressing during use, the stopper 43 and stop slot 412 can be spaced apart to facilitate insertion.

[0028] The needle 2 of the present invention passes through the needle hole 415 and cooperates with the needle hole 415. The needle 2 can limit the translation of the support seat 41. Together with the support rod group 42, the horizontal rotation of the support seat 41 is limited, and the support seat 41 can only move up and down.

[0029] The specific structure of the support rod group 42 is as follows Figure 5 As shown: the support rod group 42 includes a connecting shaft 422 and two support rods 421; the two support rods 421 are respectively arranged on both sides of the support seat 41; the two support rods 421 are hinged to the needle handle 1, and the connecting shaft 422 passes through the slide groove 411 and is connected to the two support rods 421.

[0030] In order to solve the problem that the butterfly needle is prone to causing needle stick injuries after the needle is removed, the present invention is preferably further improved as follows: a groove 414 connected to the needle hole 415 is provided on the support seat 41, and a needle blocking structure 6 is provided in the groove 414; when the needle 2 is located above the needle blocking structure 6, the needle blocking structure 6 can block the needle 2 to prevent the needle 2 from moving downward.

[0031] Specifically, such as Figure 6 and Figure 7 As shown: the needle blocking structure 6 includes a partition sheet 61 and an elastic member 62; the partition sheet 61 is located in the groove 414 and between the needle 2 and the bottom of the groove 414, and the elastic member 62 is located between the partition sheet 61 and the bottom of the groove 414. The elastic member 62 is deformed, and the elastic force of the elastic member 62 causes the partition sheet 61 to rest against the needle 2.

[0032] When removing the butterfly needle from the infusion port, Figure 4 As shown, press the support base 41 and lift the butterfly wing 3. When the tip of the needle 2 moves up to above the needle blocking structure 6, the blocking member 61 is pushed under the needle 2 by the elastic force of the elastic member 62 due to the loss of the blocking force of the needle 2, thereby limiting the downward movement of the needle 2. At the same time, the support rod assembly 42 can also limit the downward movement of the support base 41, preventing the support base 41 from dropping the needle 2. In this way, after the needle is removed, the tip of the needle 2 is not exposed, thus avoiding puncture injuries.

[0033] The elastic member 62 may be a spring or an elastic sheet. Figure 6As shown, there can be two elastic members 62, which are arranged in an eight-shaped pattern and connected to the baffle 61. In the initial state, the elastic members are bent and deformed. The opening of the groove 414 should be closed to prevent the elastic member 62 from ejecting the baffle 61 out of the groove 414.

[0034] As previously mentioned, the support rod assembly 42 can be used to limit the downward movement of the support seat 41. However, considering the length of the needle 2, the needle blocking structure 6 needs to be located below the needle 2, which requires the support seat 41 to be relatively far away from the needle handle 1. In other words, the length of the support rod assembly 42 needs to be relatively long, which results in the size of the support assembly 4 being too large and not optimal. To this end, the present invention can be further improved as follows: the butterfly needle of the infusion port includes a connector 5, which is connected to the needle handle 1 and the support seat 41. The connector is used to limit the downward movement limit of the support seat 41 to prevent the support seat 41 from moving downward and away from the needle 2; the support seat 41 has a connecting shaft removal port 413, which extends from the upper surface of the support seat 41 to the inner end of the slide groove 411.

[0035] In this way, the support rod assembly 42 can be shorter to reduce the size of the support assembly 4. The support base 41 is restricted from leaving the needle 2 by the connecting member 5, and the connecting shaft 422 can be removed from the connecting shaft removal port 413 to avoid restricting the movement of the support base 41.

[0036] Specifically, such as Figure 8 As shown, the connecting member 5 includes a flexible sheet 52 and two hard sheets 51 . The two hard sheets 51 are connected via the flexible sheet 52 . The two hard sheets 51 are respectively connected to the needle handle 1 and the support seat 41 via the flexible sheet 52 .

[0037] The connector 5 can be located between the two support rods 421. In the initial state of the butterfly port needle, the two hard sheets 51 fit together and are retracted between the needle handle 1 and the support base 41. Receiving slots can be provided on the needle handle 1 and the support base 41 to accommodate the flexible sheet 52. When the needle is removed, the two hard sheets 51 separate and eventually stretch into a straight line, allowing the needle 2 to move upward a suitable distance. The flexible sheet 52 and hard sheet 51 can be made of flexible plastic and hard plastic, respectively.

Claims

1. A butterfly needle for an infusion port, comprising a needle handle (1), a needle head (2) and a butterfly wing (3), wherein the needle head (2) is connected to the front end of the needle handle (1) and is perpendicular thereto, and the butterfly wing (3) is connected to the needle handle (1); characterized in that: The invention comprises a support assembly (4), wherein the support assembly (4) comprises a support seat (41), a support rod group (42) and a limit plate (43); the support seat (41) is arranged below the needle handle (1) and in the same direction as the needle handle (1); a needle hole (415) is provided through one end of the support seat (41) close to the needle head (2); the needle head (2) passes through the needle hole (415) and cooperates with the needle hole (415); two slide grooves (411) in the same direction as the support seat (41) are arranged at intervals on the support seat (41); the upper and lower ends of the slide grooves (411) are The wall is provided with a plurality of limiting grooves (412) arranged at intervals along the direction of the slide groove (411); the support rod groups (42) are arranged in a one-to-one correspondence with the slide groove (411); the two support rod groups (42) form an "eight"-shaped structure; the upper ends of the support rod groups (42) are hinged to the needle handle (1); the lower ends of the support rod groups (42) can slide in the slide groove (411) so that the lower ends of the two support rod groups (42) are close to or away from each other; the limiting piece (43) can be inserted into the limiting groove (412) to prevent the lower end of the support rod group (42) from moving.

2. The butterfly needle for an infusion port according to claim 1, characterized in that: The support rod group (42) comprises a connecting shaft (422) and two support rods (421); the two support rods (421) are respectively arranged on both sides of the support seat (41); the two support rods (421) are both hinged to the needle handle (1), and the connecting shaft (422) passes through the sliding groove (411) and is connected to the two support rods (421).

3. The butterfly needle for an infusion port according to claim 1, characterized in that: The support seat (41) is provided with a groove (414) connected to the needle hole (415), and a needle blocking structure (6) is provided in the groove (414); when the needle (2) is located above the needle blocking structure (6), the needle blocking structure (6) can block the needle (2) to prevent the needle (2) from moving downward.

4. The butterfly needle for an infusion port according to claim 3, characterized in that: The needle blocking structure (6) comprises a blocking piece (61) and an elastic member (62); the blocking piece (61) is located in the groove (414) and between the needle (2) and the bottom of the groove (414); the elastic member (62) is located between the blocking piece (61) and the bottom of the groove (414); the elastic member (62) is deformed, and the elastic force of the elastic member (62) causes the blocking piece (61) to abut against the needle (2).

5. The butterfly needle for an infusion port according to claim 4, characterized in that: The invention comprises a connecting piece (5), the connecting piece (5) being connected to the needle handle (1) and the support seat (41), the connecting piece being used to limit the extreme position of the downward movement of the support seat (41) so as to prevent the support seat (41) from moving downward and away from the needle head (2); the support seat (41) is provided with a connecting shaft removal outlet (413), and the connecting shaft removal outlet (413) extends from the upper surface of the support seat (41) to the inner end of the slide groove (411).

6. The butterfly needle for an infusion port according to claim 5, characterized in that: The connecting piece (5) comprises a flexible piece (52) and two hard pieces (51), the two hard pieces (51) are connected via the flexible piece (52), and the two hard pieces (51) are respectively connected to the needle handle (1) and the support seat (41) via the flexible piece (52).

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