CN214911886U

CN214911886U - Needle extractor of implanted drug delivery device

Info

Publication number: CN214911886U
Application number: CN202023255426.1U
Authority: CN
Inventors: 宁玉元; 刘光维
Original assignee: First Affiliated Hospital of Chongqing Medical University
Current assignee: First Affiliated Hospital of Chongqing Medical University
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-11-30
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a needle extractor of an implanted drug delivery device, which comprises a base (1), wherein a boss (11) is arranged on the base (1), a groove (12) with a downward opening is arranged at the position of the lower end face of the base (1) corresponding to the boss (11), a guide cylinder (21) is arranged on the boss (11), a strip-shaped groove (22) is arranged at one side of the guide sleeve (21), an open slot (13) is arranged at one side of the base (1), and the open slot (13) is communicated with the strip-shaped groove (22); a guide device is movably connected in the strip-shaped groove (22), and a trocar assembly is arranged on the guide device. The utility model discloses set up the trocar subassembly and entangle the syringe needle, pull guiding device edgewise strip groove and extract the syringe needle, both be convenient for pull out the needle, can avoid the needle-prick to hinder again, simple structure is practical, the simple operation.

Description

Needle extractor of implanted drug delivery device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a needle extractor of an implanted drug delivery device.

Background

The implantable drug delivery device is widely used at present, but when the injection seat is pulled out, a cotton swab is easy to deform due to insufficient stress, so that the injection seat is pulled out as soon as possible, the body beside the injection seat is generally pressed by a sterilized hand, when a needle point on the injection seat is pulled out, the hand joint generates a rebound force due to pulling out, and the pulling-out angle is inclined, so that the hand pressing the body is easily subjected to needle stick injury, and the manual pressing is not a very regular operation, and the discomfort or other injuries of a patient are easily caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a needle extractor of implanted drug delivery device which is convenient for extracting a needle head and can not cause needle stick injury.

The technical scheme of the utility model as follows:

the needle extractor of the implantable drug delivery device comprises a base, wherein a boss is arranged on the base, a groove with a downward opening is formed in the position, corresponding to the boss, of the lower end face of the base, a guide cylinder is arranged on the boss, a strip-shaped groove is formed in one side of a guide sleeve, an open groove is formed in one side of the base, and the open groove is communicated with the strip-shaped groove; the bar-shaped groove is movably connected with a guiding device, a trocar assembly is arranged on the guiding device, when the device is used, the base is placed at the position of the implanted drug delivery device corresponding to the epidermis, the trocar assembly is sleeved at the corresponding position of the injection needle, and the guide device is pulled to extract the injection needle along the axis direction of the bar-shaped groove.

By adopting the structure, the boss is arranged on the base, the groove is arranged at the position corresponding to the boss and used for limiting the position of the drug delivery device implanted under the skin, meanwhile, the open groove gives way to the injection needle so that the base can move along the direction of the open groove, the injection needle is positioned in the guide cylinder in the vertical direction, the arranged guide cylinder guides and limits the extraction direction of the injection needle in the vertical direction, the needle tip cannot incline due to overturning in the guide cylinder, and the needle stick injury to a nurse can be avoided; during the use, the base is lived to the hand, entangles the corresponding position of syringe needle with the trocar subassembly that sets up, holds guider and extracts out the syringe needle along the axis direction in strip groove, and the needle point of syringe needle is not exposed to whole process, can avoid the emergence that the needle pricked and hinder, and nurse's hand can not touch near patient's wound, can avoid the bacterial damage of wound, has guaranteed the sanitary environment of use, has improved the safety in utilization, simple structure is compact, the dismouting of being convenient for is disinfected, and it is convenient to use.

In order to facilitate needle pulling and guide needle pulling, the guide device preferably comprises a handle, a guide rod is arranged on one side of the handle, and the guide rod is in sliding connection with the strip-shaped groove.

In order to fix the injection needle conveniently and to be convenient for disassembly and assembly, preferably, the lower end of the handle is connected with a support rod, the lower end of the support rod is provided with a trocar assembly, the trocar assembly comprises a fixed sleeve connected with the support rod, the left end and the right end of the fixed sleeve are symmetrically provided with a first rotating sleeve and a second rotating sleeve, the first rotating sleeve is provided with a connecting rod, and the connecting rod penetrates through the fixed sleeve and is fixedly sleeved with the second rotating sleeve; one side of the fixed sleeve, one side of the first rotating sleeve and one side of the second rotating sleeve are respectively provided with an abdicating groove, and the abdicating grooves are in a straight line shape when being communicated with each other.

In order to simplify the structure and facilitate the disassembly and assembly, as the optimization, the first rotating sleeve is symmetrically provided with two connecting rods, the second rotating sleeve is symmetrically provided with two fixing holes corresponding to the positions of the connecting rods, the end faces of the left and right ends of the fixing sleeve are symmetrically provided with arc-shaped through holes at two ends, and the connecting rods corresponding to the ends penetrate through the arc-shaped through holes and are fixedly sleeved with the fixing holes.

For the convenience of positioning, preferably, the lower end face of the base is further provided with an adhesive layer.

Has the advantages that: the utility model discloses set up the trocar subassembly and entangle the syringe needle, pull guiding device edgewise strip groove and extract the syringe needle, both be convenient for pull out the needle, can avoid the needle-prick to hinder again, simple structure is practical, the simple operation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a view taken along direction a in fig. 1.

Fig. 3 is an enlarged view of fig. 1 at B.

Fig. 4 is a sectional view taken along line C-C in fig. 3.

Fig. 5 is a using state diagram of the fixed sleeve and the two rotating sleeves.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Shown by figure 1, figure 2, figure 3, figure 4 and figure 5, the utility model discloses a lower terminal surface is equipped with the base 1 of viscose layer 14 be equipped with boss 11 on the base 1, the lower terminal surface of this base 1 is equipped with the recess 12 that the opening is decurrent in the position department that corresponds boss 11 be equipped with guide cylinder 21 on the boss 11 one side of uide bushing 21 is equipped with bar groove 22, one side of base 1 is equipped with open slot 13, open slot 13 and bar groove 22 intercommunication.

The guide device comprises a handle 31, a guide rod 32 is arranged on one side of the handle 31, and the guide rod 32 is connected in a sliding manner in the strip-shaped groove 22; the lower end of the handle 31 is connected with a supporting rod, the lower end of the supporting rod is provided with a trocar assembly, the trocar assembly comprises a fixed sleeve 41 connected with the supporting rod, the left and right ends of the fixed sleeve 41 are symmetrically provided with a first rotating sleeve 42 and a second rotating sleeve 43, the first rotating sleeve 42 is symmetrically provided with two connecting rods 421, the second rotating sleeve 43 is symmetrically provided with two fixing holes 431 at positions corresponding to the connecting rods 421, the end surfaces of the left and right ends of the fixed sleeve 41 are symmetrically provided with arc-shaped through holes at two ends, and the connecting rods 421 at the corresponding ends penetrate through the arc-shaped through holes and are fixedly sleeved with the fixing holes 431; fixed cover 41, first commentaries on classics cover 42 and the second commentaries on classics one side on the cover 43 respectively is equipped with a groove of stepping down 44, three when stepping down groove 44 intercommunication each other becomes the straight line, and during the use, the base is placed in the position department that implanted device corresponds the epidermis, with the corresponding position of fixed cover 41 and two commentaries on classics cover entangling the syringe needle, holds the handle, makes the guide bar extract the syringe needle along the axis direction in bar groove.

The utility model discloses a use method as follows:

as shown in fig. 1 to 5, a boss 11 is arranged on a base 1, a groove 12 is arranged at a position corresponding to the boss 11, the groove 12 is used for limiting a drug delivery device (not shown) implanted under the skin, meanwhile, an injection needle is in an L shape (the position shown by a dotted line in fig. 1), the vertical section of the injection needle penetrates into the skin of a patient, the horizontal section is connected with a drug tube and is positioned on the body surface, the open slot 13 is set to give the position of the vertical section of the injection needle, so that the base 1 moves along the direction of the open slot 13, the vertical section of the injection needle is positioned in a guide cylinder 21 in the vertical direction, at the moment, the drug delivery device embedded under the skin is completely positioned in the groove 12, the base 1 is fixed on the skin by an adhesive layer 14, the guide cylinder 21 is arranged to guide and limit the extraction direction of the injection needle in the vertical direction, the needle cannot tilt the needle point due to the overturning of a hand force or a rebound force, can avoid the needle stick injury to the nurse.

When in use, the base 1 is pressed by hand, the notches of the abdicating grooves 44 of the fixed sleeve 41 face to the right lower part, the first rotating sleeve 42 and the second rotating sleeve 43 which are mutually sleeved rotate together, the notches of the abdicating grooves 44 on the two rotating sleeves also face to the right lower part, the three abdicating grooves 44 are communicated with each other to form a straight line to form a through groove (as shown in a picture in figure 5), the handle 31 is pushed downwards, the guide rod 32 moves in the guide cylinder 21, the horizontal section of the injection needle enters the middle cavities of the fixed sleeve 41 and the two rotating sleeves through the through groove formed by the three abdicating grooves, at the moment, the two rotating sleeves are overturned, the two ends of the formed through groove are sealed, the horizontal section of the injection needle cannot be moved out in the vertical direction (as shown in a picture b picture in figure 5), then, the handle 31 is pulled upwards along the axial direction of the strip-shaped groove, the inner wall of the cavity in the middle part of the two rotating sleeves is used as the supporting position of the horizontal section of the injection needle to be lifted upwards, the vertical syringe needle of extracting along the axis direction of strip groove 22 promptly, the needle point of syringe needle is not exposed to whole process, can avoid the emergence that the needle pricked, and near nurse's hand can not touch patient's wound, can avoid the bacterial damage of wound, has guaranteed the sanitary environment who uses, has improved safety in utilization, simple structure is compact, the dismouting of being convenient for is disinfected, and it is convenient to use.

It should be noted that the base 1 is required to be sterilized before use, in order to contact with a wound buried in a skin site; two change the cover when pulling the syringe needle, the lateral wall of two commentaries on classics cover cavity inner chambers of horizontal segment butt can not be in longitudinal rotation, in addition, all is greater than the diameter of syringe needle with the connecting pipe diameter of syringe needle intercommunication, and the one end of first commentaries on classics cover 42 is close to uide bushing 21, under the prerequisite that transversely can not the roll-off, and the groove 44 of stepping down on two commentaries on classics covers of whole pulling process can not communicate with the groove 44 of stepping down on the fixed cover 41 again, pulls out the needle process stability.

The utility model discloses do not describe the part unanimously with prior art, do not describe herein any more.

The above is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings are directly or indirectly applied to other related technical fields, all the same principle is within the patent protection scope of the present invention.

Claims

1. A needle extractor for an implantable drug delivery device, comprising: the novel guide sleeve structure comprises a base (1), wherein a boss (11) is arranged on the base (1), a groove (12) with a downward opening is formed in the position, corresponding to the boss (11), of the lower end face of the base (1), a guide cylinder (21) is arranged on the boss (11), a strip-shaped groove (22) is formed in one side of the guide sleeve (21), an open groove (13) is formed in one side of the base (1), and the open groove (13) is communicated with the strip-shaped groove (22); the utility model discloses a medical injection needle, including bar groove (22), bar groove (22) are equipped with the guiding device in swing joint the guiding device be equipped with the trocar subassembly on the guiding device, during the use, the base is placed in the position department that the implanted device corresponds the epidermis, entangles the corresponding position of syringe needle with the trocar subassembly, holds the guiding device and extracts the syringe needle along the axis direction in bar groove.

2. The needle puller of an implantable drug delivery device according to claim 1, wherein: the guiding device comprises a handle (31), a guiding rod (32) is arranged on one side of the handle (31), and the guiding rod (32) is connected in a sliding mode in a strip-shaped groove (22).

3. The needle puller of an implantable drug delivery device according to claim 1, wherein: the lower end of the handle (31) is connected with a supporting rod, the lower end of the supporting rod is provided with a trocar assembly, the trocar assembly comprises a fixed sleeve (41) connected with the supporting rod, the left end and the right end of the fixed sleeve (41) are symmetrically provided with a first rotating sleeve (42) and a second rotating sleeve (43), the first rotating sleeve (42) is provided with a connecting rod (421), and the connecting rod (421) penetrates through the fixed sleeve (41) and is fixedly sleeved with the second rotating sleeve (43); one side of each of the fixed sleeve (41), the first rotating sleeve (42) and the second rotating sleeve (43) is provided with one abdicating groove (44), and the abdicating grooves (44) are communicated with each other to form a straight line.

4. The needle puller of an implantable drug delivery device according to claim 1, wherein: first commentaries on classics cover (42) are gone up the symmetry and are equipped with two connecting rods (421) the second changes the symmetry of the position department that corresponds connecting rod (421) on cover (43) and is equipped with two fixed orificess (431) the symmetry is equipped with both ends arc through-hole on the terminal surface at fixed cover (41) left and right both ends, corresponds the end arc through-hole is worn out to establish by connecting rod (421) to cup joint fixedly with fixed orifices (431).

5. The needle puller of an implantable drug delivery device according to claim 1, wherein: the lower end face of the base (1) is also provided with an adhesive layer (14).