CN217366760U - Device for installing and removing special needle of implanted drug delivery device - Google Patents

Abstract

The utility model discloses a device for installing and removing a special needle of an implanted drug delivery device, which comprises a first bracket and a second bracket, and the first bracket includes a positioning ring and a vertical rod. The second bracket includes a casing and a double-layer splint. The double-layer splint is connected to the casing. The casing is sleeved on the vertical rod and can move up and down along the vertical rod. The double-layered splint includes an upper plate and a lower plate. The upper plate There is a clearance space between the lower plate and the lower plate, and a straight slot is defined in the lower plate. The straight slot includes a first end and a second end, and the first end penetrates the side wall of the lower plate to form an entrance. Compared with the prior art, the utility model locates the puncture point with the help of the positioning ring, restricts the movement of the special needle in the up-down direction with the help of the double-layer splint, and at the same time, the special needle can enter the gap space of the double-layer splint from the entrance, and the special needle can be moved along the double-layer splint with the help of the cannula. With the vertical rod moving up and down, the special needle is installed on the base or pulled out from the base, so as to avoid stabbing the hand due to excessive pulling force.

Description

Installation and extraction device for special needle of implantable drug delivery device

technical field

The utility model relates to the field of medical aids, in particular to a device for installing and removing a special needle for an implantable drug delivery device.

Background technique

The implantable drug delivery device, also known as the infusion port, is mainly used for chemotherapy of tumor patients to reduce the pain caused by multiple punctures and reduce the damage of peripheral blood vessels. After the implantable drug delivery device is implanted under the skin of the human body, it needs to pass through the puncture injection base to complete the drug liquid infusion. In order to reduce the debris generated during the puncture process and prolong the service life of the device, it is necessary to use a special needle without damage, that is, a special needle for an implantable drug delivery device. Medical staff need to wear sterile gloves to operate under sterile conditions. Since the needle is very closely combined with the base after the needle is pierced into the base, it needs to use a lot of force when pulling out the needle. Therefore, the sharp needle point is often easy to cause medical staff. hand stab wounds, thereby increasing the risk of nosocomial infections among healthcare workers. At present, there is no device for completing the installation and removal of the special needle of the implantable drug delivery device. Therefore, it is necessary to design a device to complete this operation and reduce the direct contact of the medical staff with the needle during operation, so as to protect the medical staff. Reduce the risk of infection.

Therefore, there is an urgent need for a device for installing and removing a special needle for an implantable drug delivery device, which can safely and efficiently complete the installation and removal of a special needle for an implantable drug delivery device, to overcome the above-mentioned defects.

Utility model content

The purpose of the present utility model is to provide a device for installing and removing a special needle for an implantable drug delivery device, which can safely and efficiently complete the installation and removal of a special needle for an implantable drug delivery device.

In order to achieve the above purpose, the device for installing and removing a special needle for an implantable drug delivery device of the present invention includes a first bracket and a second bracket, the second bracket can move relative to the first bracket in the up-down direction, and the first bracket A bracket includes a positioning ring and a vertical rod connected to the middle of the positioning ring. The second bracket includes a sleeve and a double-layer splint for limiting the special needle for the implantable drug delivery device. The splint is connected to the side wall of the sleeve, the sleeve is a hollow structure that penetrates up and down, the sleeve is sleeved on the vertical rod and can move up and down along the vertical rod, the The double-layer splint includes an upper plate and a lower plate arranged horizontally and in parallel, there is a gap space between the upper plate and the lower plate, and the lower plate is provided with a straight groove in the shape of a word, and the straight groove includes a second plate distributed at both ends. One end part and a second end part, the first end part penetrates the side wall of the lower plate to form an entrance, the entrance is for the special needle of the implantable drug delivery device to enter.

Compared with the prior art, the installation and removal device of the special needle for the implantable drug delivery device of the present invention relies on the cooperation between the first bracket and the second bracket, and the first bracket has a positioning ring and a vertical rod. The ring locates the puncture point. The second bracket has a cannula and a double-layer splint. The double-layer splint can be driven to move up and down by the sleeve on the vertical rod. The double-layer splint restricts the movement of the special needle in the up and down direction. It can enter the gap space of the double-layer splint from the entrance, and use the sleeve to move up and down along the vertical rod to install the special needle on the base or pull it out from the base, so that the double-layer splint replaces the human hand and avoids the need for pulling out. The force is too large and stabbed to the hand to avoid iatrogenic infection.

Preferably, a connecting plate is also connected between the upper plate and the lower plate, the connecting plate is vertically arranged on the side walls of the upper plate and the lower plate, and the connecting plate is connected to the upper plate and the lower plate. the casing connection.

Preferably, the special needle for the implantable drug delivery device enters into the straight groove vertically from the inlet until it abuts against the second end of the straight groove.

Preferably, the width of the straight groove matches the outer diameter of the special needle for the implantable drug delivery device.

Preferably, the positioning ring has a half-ring structure or a full-ring structure, and the center of the positioning ring is the puncture point.

Preferably, the center of the positioning ring and the second end are located on the same vertical line.

Preferably, the first bracket further includes a cross bar, and the cross bar is connected to the top of the straight bar.

Preferably, the center of the horizontal bar is located at the top of the straight bar.

Preferably, the second bracket further includes two handles, the handles have a connecting rod, the handles are connected to the top of the sleeve through the connecting rod, and the two handles are symmetrically distributed on the left and right.

Preferably, the handle has an annular structure.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of the installation and removal device of the special needle of the implantable drug delivery device of the present invention.

Fig. 2 is a three-dimensional structural schematic diagram of the first bracket of the installation and extraction device of the special needle for the implantable drug delivery device of the present invention.

3 is a schematic three-dimensional structural diagram of the second bracket of the installation and extraction device of the special needle for the implantable drug delivery device of the present invention.

Fig. 4 is a three-dimensional structural schematic diagram of a double-layer splint on which the extraction device is installed for the special needle of the implantable drug delivery device of the present invention.

5 is a side view of the installation and removal device of the special needle of the implantable drug delivery device of the present invention before the special needle is inserted into the base.

6 is a side view of the installation and removal device of the special needle of the implantable drug delivery device of the present invention after the special needle is inserted into the base.

FIG. 7 is a schematic structural diagram of a special needle of an implantable drug delivery device.

Detailed ways

In order to describe the technical content and structural features of the present utility model in detail, further description is given below with reference to the embodiments and the accompanying drawings.

Please refer to FIGS. 5 to 7 , the implantable drug delivery device 200 includes a base 201 and a special needle 202 , the base 201 is arranged under the skin, and the special needle 202 includes a needle body 2021 , an infusion tube 2022 and a mounting wing 2023 , and the mounting wing 2023 They are respectively connected to both sides of the needle body 2021 , and the infusion tube 2022 is connected to the end of the needle body 2021 . It can be understood that the front end of the needle body 2021 is used for puncturing. The puncture end of the needle body 2021 is disposed downward.

Please refer to FIG. 1 to FIG. 4 , the device 100 for installing and removing a special needle for an implantable drug delivery device of the present invention includes a first bracket 1 and a second bracket 2 . The second bracket 2 can move up and down relative to the first bracket 1 . The first bracket 1 includes a positioning ring 11 and a vertical rod 12 connected to the middle of the positioning ring 11 . The second bracket 2 includes a cannula 21 and a double-layer splint 22 for the special-purpose needle 202. The double-layer splint 22 is connected to the side wall of the cannula 21. The cannula 21 is a hollow structure that penetrates up and down, and the cannula 21 is set It is connected to the vertical rod 12 and can move up and down along the vertical rod 12 . The double-layer splint 22 includes an upper plate 221 and a lower plate 222 arranged horizontally and in parallel, and there is a gap space 224 between the upper plate 221 and the lower plate 222 . The lower plate 222 defines a straight slot 2221 in the shape of a character. The straight slot 2221 includes a first end portion and a second end portion 2222 distributed at both ends. The first end portion penetrates the side wall of the lower plate 222 to form an inlet 2223. The dedicated needle 202 enters. Before installation, insert the special needle 202 into the double-layer splint 22 from the inlet 2223, so that the special needle 202 faces the skin downward. It can be understood that the mounting wings 2023 enter the double-layer splint 22 from the entrance 2223, and the upper and lower plates 221 and 222 limit the mounting wings 2023 in the up and down direction, and the special needle 202 is displaced in the up and down direction. The positioning ring 11 is positioned on the skin. It is worth noting that the center of the positioning ring 11 is the puncture point. After positioning the positioning ring 11 , manually move the cannula 21 downward relative to the vertical rod 12 , so that the special needle 202 pierces the skin downward and combines with the base 201 under the skin, thus completing the installation of the special needle 202 . When wanting to pull out the special needle 202 from the base 201, manually move the cannula 21 upward relative to the vertical rod 12, thereby driving the double-layer splint 22 to move upward, thereby driving the special needle 202 to pull out the base 201, thereby safely completing the special needle 202 removal work, to avoid the risk of stabbing the medical staff due to excessive pulling force. More specifically, as follows:

Referring to FIG. 4 , a connecting plate 223 is also connected between the upper plate 221 and the lower plate 222 . The connecting plate 223 is vertically arranged on the side walls of the upper plate 221 and the lower plate 222 , and the connecting plate 223 is connected with the sleeve 21 . By means of the connecting plate 223 , the double-layer splint 22 is connected to the sleeve 21 and moves with the sleeve 21 .

Please refer to FIG. 4 to FIG. 6 , the straight grooves 2221 are distributed along the left and right directions of the lower plate 222 . The dedicated needle 202 enters the straight groove 2221 vertically from the inlet 2223 until it abuts against the second end 2222 of the straight groove 2221 . Preferably, in this embodiment, the width of the straight groove 2221 matches the outer diameter of the dedicated needle 202 . Therefore, the special needle 202 can move from the first end to the second end 2222 along the straight groove 2221 from the entrance 2223, preventing the special needle 202 from moving in the front-rear direction, and making the sliding of the special needle 202 more reliable and stable. On the other hand, when the special needle 202 is installed on the base 201 after puncturing, the present invention is moved from the first end to the second end 2222 so that the special needle 202 is withdrawn from the inlet 2223, thereby leaving alone The special needle 202 is on the base 201 to facilitate subsequent infusion work. When the special needle 202 needs to be pulled out, the utility model is moved from the second end 2222 to the direction of the first end, so that the special needle 202 enters the clearance space 224 through the inlet 2223 to move to the second end 2222 again. position, and then move the cannula 21 upward, so that the cannula 21 drives the double-layer splint 22 and the special needle 202 to move upward together to be pulled out from the base 201 .

Referring to FIG. 2 , the positioning ring 11 is a semi-ring structure, the center of the semi-ring structure is the puncture point, and the center of the semi-ring structure and the second end 2222 are located on the same vertical line. When the special needle 202 moves from the first end to the second end 2222, the center of the positioning ring 11 is the position of the puncture point, thereby reducing the puncturing error rate and improving the puncturing accuracy. It can be understood that, in other embodiments, the positioning ring 11 can be a full ring structure, so it is not limited thereto.

Please refer to FIG. 2 and FIG. 3 , the first bracket 1 further includes a cross bar 13 , and the cross bar 13 is connected to the top of the vertical bar 12 . With the help of the cross bar 13 , the sleeve 21 is prevented from being separated from the vertical bar 12 when it moves upward, so as to prevent the second bracket 2 from being separated from the first bracket 1 . Specifically, the center of the cross bar 13 is located at the top of the straight bar. Preferably, the second bracket 2 further includes two handles 23, the handle 23 has a connecting rod 231, the handle 23 is connected to the top of the sleeve 21 through the connecting rod 231, and the two handles 23 are symmetrically distributed. Through the handle 23, the cannula 21 can be moved relative to the vertical rod 12 by the force of the fingers, which is more convenient for medical staff to operate. In addition, with the matching of the horizontal bar 13 and the handle 23 , the horizontal bar 13 can also be used to borrow force to make the movement of the second bracket 2 easier. For example, the handle 23 has a ring-shaped structure. Of course, in other embodiments, the handle 23 can also be a bar-shaped structure, which is not limited thereto.

With reference to the accompanying drawings, the working principle and usage of the device 100 for installing and removing the special needle for implantable drug delivery devices of the present invention are described: Move to the second end 2222, the mounting wings 2023 are limited by the double-layer splint 22 in the up-down direction, then, pull the handle 23 upward to leave a certain distance between the special needle 202 and the positioning ring 11; 11 is placed at the position of the patient's base 201, locate the puncture point, and then push the handle 23 downward, so that the cannula 21 drives the double-layer splint 22 and the special needle 202 to move down together until the puncture is completed. The whole of the utility model is withdrawn from the entrance 2223, that is, it can be moved along the straight groove 2221 from the first end to the second end 2222; when the special needle 202 needs to be pulled out, the whole of the utility model can be entered from the entrance 2223 That is, it is sufficient to move along the straight groove 2221 in the direction from the second end portion 2222 to the first end portion. Next, the handle 23 is pulled upward, so that the cannula 21 drives the double-layer splint 22 to move upward to pull out the special needle 202 .

Compared with the prior art, the installation and removal device 100 of the special needle for implantable drug delivery device of the present invention is provided with a positioning ring 11 and a vertical axis by means of the cooperation between the first bracket 1 and the second bracket 2 . The straight rod 12 uses the positioning ring 11 to locate the puncture point. The second bracket 2 has a sleeve 21 and a double-layer splint 22. The double-layer splint 22 can be driven to move up and down by covering the sleeve 21 on the vertical rod 12. The splint 22 restricts the movement of the special needle 202 in the up and down direction, and at the same time the special needle 202 can enter the clearance space 224 of the double-layer splint 22 from the inlet 2223, and the special needle 202 can be moved up and down along the vertical rod 12 by the cannula 21. Installed on the base 201 or pulled out from the base 201, so that the double-layer splint 22 replaces the human hand, avoids stabbing the human hand due to excessive pulling force, and avoids iatrogenic infection.

The above disclosures are only preferred examples of the present invention, and cannot limit the scope of the rights of the present invention. Therefore, the equivalent changes made according to the claims of the present invention all belong to the scope covered by the present invention.

Claims (10)

1. A device for installing and removing a special needle for an implantable drug delivery device, characterized in that it comprises a first bracket and a second bracket, the second bracket can move relative to the first bracket in an up-down direction, and the first bracket The bracket includes a positioning ring and a vertical rod connected to the middle of the positioning ring. The second bracket includes a sleeve and a double-layer splint for limiting the special needle of the implantable drug delivery device. The splint is connected to the side wall of the sleeve, the sleeve is a hollow structure that penetrates up and down, the sleeve is sleeved on the vertical rod and can move up and down along the vertical rod, the double The plywood includes an upper plate and a lower plate arranged horizontally and in parallel, there is a gap space between the upper plate and the lower plate, the lower plate is provided with a straight groove in the shape of a word, and the straight groove includes a first plate distributed at both ends. An end part and a second end part, the first end part penetrates the side wall of the lower plate to form an inlet, and the inlet is for the special needle of the implantable drug delivery device to enter. 2 . The device for installing and removing a special needle for an implantable drug delivery device according to claim 1 , wherein a connecting plate is also connected between the upper plate and the lower plate, and the connecting plate is vertically oriented. 3 . It is arranged on the side walls of the upper plate and the lower plate, and the connecting plate is connected with the sleeve. 3 . The device for installing and removing a special needle for an implantable drug delivery device according to claim 1 , wherein the special needle for an implantable drug delivery device enters into the straight groove vertically from the entrance. 4 . until the second end of the straight groove is abutted. 4 . The device for installing and removing a special needle for an implantable drug delivery device according to claim 1 , wherein the width of the straight groove matches the outer diameter of the special needle for the implantable drug delivery device. 5 . 5 . The device for installing and removing a special needle for an implantable drug delivery device according to claim 1 , wherein the positioning ring is a half-ring structure or a full-ring structure, and the center of the positioning ring is the puncture point. 6 . 6 . The device for installing and removing a special needle for an implantable drug delivery device according to claim 5 , wherein the center of the positioning ring and the second end are located on the same vertical line. 7 . 7 . The device for installing and removing a special needle for an implantable drug delivery device according to claim 1 , wherein the first bracket further comprises a cross bar, and the cross bar is connected to the top of the straight bar. 8 . 8 . The device for installing and removing a special needle for an implantable drug delivery device according to claim 7 , wherein the center of the transverse rod is located at the top of the straight rod. 9 . 9 . The device for installing and removing a special needle for an implantable drug delivery device according to claim 1 , wherein the second bracket further comprises two handles, the handles have a connecting rod, and the handles pass through the The connecting rod is connected to the top of the sleeve, and the two handles are symmetrically distributed from left to right. 10 . The device for installing and removing a special needle for an implantable drug delivery device according to claim 9 , wherein the handle is in a ring structure. 11 .

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