Whistle lymph node tracer injector

Abstract

The utility model relates to the technical field of tracer injection, and discloses a sentinel lymph node tracer injector which comprises a needle cylinder, a needle head assembly is inserted into the bottom end of the needle cylinder, the needle head assembly comprises a needle head sleeve and an injection needle head, and the injection needle head is fixedly installed at the bottom of the needle head sleeve. According to the sentinel lymph node tracer injector, when a piston is controlled by an auxiliary pull rod to extract a tracer, a fixing ring fixedly connected with the surface of the auxiliary pull rod drives sliding blocks on the two sides of a pointing lever fixedly connected with a linkage arm to slide in two sets of sliding sleeve shells; in the sliding process, the extraction amount can be clearly known through comparison of the pointing lever and the milliliter line, meanwhile, one of the limiting grooves formed in one set of sliding sleeve shells is aligned with the milliliter line needing milliliter extraction, and then a limiting insertion rod is inserted to form limiting; and therefore, the single extraction amount is quantified in the extraction process, and excessive extraction is avoided.

Description

Technical Field

[0001] This utility model relates to the field of tracer injection technology, specifically a sentinel lymph node tracer injector. Background Technology

[0002] Endometrial cancer is one of the most common gynecological malignancies, and its incidence is increasing year by year. Staging surgery for endometrial cancer requires retroperitoneal lymph node dissection. However, many endometrial cancer patients have comorbidities such as obesity, hypertension, and diabetes, which increases the difficulty of retroperitoneal lymph node dissection. Furthermore, lymph node dissection can increase the incidence of related complications, such as lymphedema, lymphocele, chylous fistula, cellulitis, vascular injury, and nerve damage, affecting patients' quality of life. Sentinel lymph node tracer injection sites for endometrial cancer include uterine body injection (subserosal injection at the fundus, deep myometrium injection, and injection around the intrauterine tumor) and cervical injection, due to their advantages of simple operation, high repeatability, and high sentinel lymph node detection rate.

[0003] However, in actual operation, the inventors found the following problems: Under the existing technology, the tracer injection method is as follows: after successful anesthesia, the lithotomy position is taken, the cervix is ​​disinfected and exposed, and the tracer is injected at the 3 and 9 o'clock positions of the cervix (single tracer) or the 2, 4, 8, and 10 o'clock positions of the cervix (combined tracer). The tracer is slowly injected into the shallow injection point (depth 0.1-0.3cm) and then into the deep injection point (depth 1-2cm). However, during the injection process, because the needle needs to come into contact with the cervix, the medical staff cannot accurately and intuitively understand the injection depth, which greatly tests the clinical experience of the medical staff.

[0004] Based on this, the present invention provides a sentinel lymph node tracer injector. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a sentinel lymph node tracer injector that offers the advantages of providing indirect and intuitive information about the injection depth through needle markings and assisting in limiting the injection volume, thus solving the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a sentinel lymph node tracer injector, comprising a syringe, a needle assembly inserted into the bottom end of the syringe, the needle assembly comprising a needle sleeve and an injection needle, the injection needle being fixedly installed at the bottom of the needle sleeve, the surface of the injection needle being respectively provided with a 0.3mm red marking groove, a 0.5mm orange marking groove, a 1.0mm green marking groove and a 1.5mm blue marking groove, the inside of the syringe being provided with a piston, and the surface of the syringe being provided with milliliter lines.

[0007] Preferably, an auxiliary pull rod is fixedly connected to the top of the piston, and a milliliter metering component is provided on the surface of the auxiliary pull rod. The milliliter metering component includes a fixing ring, a linkage arm, and a guide bar. The fixing ring is fixedly installed on the surface of the auxiliary pull rod, and the linkage arm is fixedly connected to the outer arc surface of the fixing ring. The other end of the linkage arm is fixedly connected to the guide bar.

[0008] Preferably, two sets of sliding sleeves are fixedly installed on the outer arc surface of the syringe, and sliding blocks are slidably connected inside the two sets of sliding sleeves. A guide bar is fixedly connected to the inner side of the sliding block.

[0009] Preferably, sliding sleeves are provided on both sides of the milliliter line at horizontal positions.

[0010] Preferably, the length of the milliliter line is equal to the length of the sliding sleeve.

[0011] Preferably, the adjacent spacing between the 0.5mm orange marking groove, the 1.0mm green marking groove and the 1.5mm blue marking groove is the same.

[0012] Preferably, one set of the sliding sleeves has a plurality of limiting grooves, and a limiting rod is inserted into the interior of one set of the limiting grooves.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This sentinel lymph node tracer injector uses 0.3mm red, 0.5mm orange, 1.0mm green, and 1.5mm blue marking grooves on the surface of the injection needle to differentiate the needle depths from 0.3mm, 0.5mm, 1.0mm, 1.5mm, to a fully submerged 2.0mm. The use of these four colors clearly indicates the depth the needle has penetrated into the cervix during sentinel lymph node tracer injection, significantly improving the accuracy of medical personnel. Simultaneously, when the tracer is extracted by controlling the piston through the auxiliary pull rod, the fixed ring fixedly connected to the surface of the auxiliary pull rod drives the sliding blocks on both sides of the pointer fixedly connected to the linkage arm to slide inside the two sets of sliding sleeves. During the sliding process, the amount extracted can be clearly understood by comparing the pointer and the milliliter line. At the same time, one of the limiting grooves opened in one of the sets of sliding sleeves is aligned with the milliliter line of the number of milliliters to be extracted, and then the limiting rod is inserted to form a limit. Thus, the amount extracted in a single extraction is quantified during the extraction process to avoid over-extraction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0016] Figure 2This is a schematic diagram of the needle assembly structure of this utility model;

[0017] Figure 3 This utility model Figure 1 A partial structural diagram.

[0018] In the diagram: 1. Syringe; 101. Milliliter line; 102. Piston; 103. Auxiliary pull rod; 2. Needle assembly; 201. Needle sleeve; 202. Injection needle; 203. 0.3mm red marking groove; 204. 0.5mm orange marking groove; 205. 1.0mm green marking groove; 206. 1.5mm blue marking groove; 3. Milliliter dispensing assembly; 301. Fixing ring; 302. Linkage arm; 303. Guide bar; 304. Sliding block; 305. Sliding sleeve; 306. Limiting rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 A sentinel lymph node tracer injector includes a syringe 1, with a needle assembly 2 inserted into the bottom end of the syringe 1. The needle assembly 2 includes a needle sleeve 201 and an injection needle 202. The injection needle 202 is fixedly mounted on the bottom of the needle sleeve 201. The surface of the injection needle 202 is respectively provided with a 0.3mm red marking groove 203, a 0.5mm orange marking groove 204, a 1.0mm green marking groove 205, and a 1.5mm blue marking groove 206. A piston 102 is provided inside the syringe 1, and a milliliter line 101 is provided on the surface of the syringe 1. The injection needle 202 is provided with a 0.3mm red marking groove 203, a 0.5mm orange marking groove 204, a 1.0mm green marking groove 205, and a 1.5mm blue marking groove 206, thereby dividing the injection needle 202 into 0.3mm, 0.5mm, 1.0mm, 1.5mm and a fully submerged 2.0mm. The four colors of red, orange, green and blue can be used to clearly understand the depth of the needle after it has penetrated into the cervix during the injection of sentinel lymph node tracer with a syringe, which greatly improves the accuracy of medical staff during operation.

[0021] Please see Figure 2 The adjacent spacing between the 0.5mm orange marking groove 204, the 1.0mm green marking groove 205, and the 1.5mm blue marking groove 206 is the same.

[0022] Please see Figure 1 and Figure 3 An auxiliary pull rod 103 is fixedly connected to the top of the piston 102. A milliliter metering component 3 is provided on the surface of the auxiliary pull rod 103. The milliliter metering component 3 includes a fixing ring 301, a linkage arm 302, and a guide bar 303. The fixing ring 301 is fixedly installed on the surface of the auxiliary pull rod 103. The linkage arm 302 is fixedly connected to the outer arc surface of the fixing ring 301. The guide bar 303 is fixedly connected to the other end of the linkage arm 302. Two sets of sliding sleeves 305 are fixedly installed on the outer arc surface of the syringe 1. Sliding blocks 304 are slidably connected inside both sets of sliding sleeves 305. The guide bar 303 is fixedly connected to the inner side of the sliding blocks 304. Sliding sleeves 305 are respectively provided at horizontal positions on both sides of the milliliter line 101. The length of the milliliter line 101 is equal to the length of the sliding sleeve 305. The sliding sleeve 305 has several limiting grooves. A limiting rod 306 is inserted into one of the limiting grooves. When the piston 102 is controlled by the auxiliary pull rod 103 to extract the tracer, the sliding blocks 304 on both sides of the guide bar 303, which is fixedly connected to the surface of the auxiliary pull rod 103, slide inside the two sets of sliding sleeves 305. During the sliding process, the amount extracted can be clearly understood by comparing the guide bar 303 with the milliliter line 101. At the same time, one of the limiting grooves in one set of sliding sleeves 305 is aligned with the milliliter line 101 indicating the number of milliliters to be extracted, and the limiting rod 306 is inserted to form a limit. Thus, the amount extracted in a single extraction is quantified during the extraction process to avoid over-extraction.

[0023] The working principle involves setting 0.3mm red marking grooves 203, 0.5mm orange marking grooves 204, 1.0mm green marking grooves 205, and 1.5mm blue marking grooves 206 on the surface of the injection needle 202. This divides the injection needle 202 into 0.3mm, 0.5mm, 1.0mm, 1.5mm, and a fully submerged 2.0mm depth. The four colors (red, orange, green, and blue) clearly indicate the depth of the needle penetration into the cervix during sentinel lymph node tracer injection. The auxiliary lever 103 controls the depth of penetration. When the piston 102 extracts the tracer, the fixed ring 301 fixedly connected to the surface of the auxiliary pull rod 103 drives the sliding blocks 304 on both sides of the pointer 303 fixedly connected to the linkage arm 302 to slide inside the two sets of sliding sleeves 305. During the sliding process, the amount extracted can be clearly understood by comparing the pointer 303 and the milliliter line 101. At the same time, one of the limiting grooves opened in one of the sets of sliding sleeves 305 is aligned with the milliliter line 101 of the required number of milliliters to be extracted, and then the limiting rod 306 is inserted to form a limit, so as to avoid excessive extraction.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sentinel lymph node tracer injector, characterized in that, The syringe includes a syringe (1), and a needle assembly (2) is inserted into the bottom end of the syringe (1). The needle assembly (2) includes a needle sleeve (201) and an injection needle (202). The injection needle (202) is fixedly installed at the bottom of the needle sleeve (201). The surface of the injection needle (202) is provided with a 0.3mm red marking groove (203), a 0.5mm orange marking groove (204), a 1.0mm green marking groove (205), and a 1.5mm blue marking groove (206). A piston (102) is provided inside the syringe (1). A milliliter line (101) is provided on the surface of the syringe (1).

2. A sentinel lymph node tracer injector according to claim 1, wherein: An auxiliary pull rod (103) is fixedly connected to the top of the piston (102). A milliliter metering component (3) is provided on the surface of the auxiliary pull rod (103). The milliliter metering component (3) includes a fixing ring (301), a linkage arm (302), and a guide bar (303). The fixing ring (301) is fixedly installed on the surface of the auxiliary pull rod (103). The linkage arm (302) is fixedly connected to the outer arc surface of the fixing ring (301). The guide bar (303) is fixedly connected to the other end of the linkage arm (302).

3. A sentinel lymph node tracer injector according to claim 1, wherein: Two sets of sliding sleeves (305) are fixedly installed on the outer arc surface of the syringe (1). Sliding blocks (304) are slidably connected inside the two sets of sliding sleeves (305). A guide bar (303) is fixedly connected to the inner side of the sliding block (304).

4. The sentinel lymph node tracer injector of claim 1, wherein: Sliding sleeves (305) are respectively provided on both sides of the milliliter line (101) at horizontal positions.

5. The sentinel lymph node tracer injector of claim 1, wherein: The length of the milliliter line (101) is equal to the length of the sliding sleeve (305).

6. A sentinel lymph node tracer injector according to claim 1, wherein: The adjacent spacing between the 0.5mm orange marking groove (204), the 1.0mm green marking groove (205), and the 1.5mm blue marking groove (206) is the same.

7. A sentinel lymph node tracer injector according to claim 3, wherein: One set of the sliding sleeves (305) has several limiting grooves, and a limiting rod (306) is inserted into the inside of one set of the limiting grooves.

Images