CN214971266U - Treatment source applicator assembly - Google Patents

Abstract

The utility model discloses a source ware subassembly is executed in treatment relates to the medical equipment field, this scheme includes the treatment device body, elasticity locating part, the treatment device body includes the head, main part and rear portion, the last contact pin hole of having seted up of treatment device body, the contact pin hole, the annular mounting groove has been seted up on the periphery of main part, set up mounting groove at head or rear portion, elasticity locating part includes spacing ring, stop plug, in the spacing ring is fixed in the annular mounting groove, it is provided with first spacing hole to correspond the contact pin hole on the spacing ring, it is provided with the spacing hole of second to correspond the contact pin hole on the stop plug. The limit plug can be installed optionally, the treatment needle and the treatment tube can be fixed simultaneously by a treatment needle person according to requirements, and the device has the advantages of simple structure, quickness in fixation and flexibility in selection.

Description

Treatment source applicator assembly

Technical Field

The utility model relates to the field of medical equipment, concretely relates to source ware subassembly is executed in treatment.

Background

Cervical cancer is the most common gynecological malignant tumor, radiotherapy is one of the main treatment means of cervical cancer, an insertion needle is adopted as a source applicator, a radioactive source can directly enter a focal region, the radiotherapy dose of the focal region is improved on the premise of not increasing the damage of surrounding normal tissues, the optimal radiotherapy effect can be obtained theoretically, the insertion needle has no nerve touch feeling at the bottom of a vagina, the effect of minimally invasive, high efficiency and low pain is achieved by adopting the insertion needle, the main technical means of cervical cancer radiotherapy is provided, and the insertion needle can be used for radiotherapy of postoperative stumps and can also be used for cancer patients who are not suitable for operations.

The main technical problem faced by the insertion needle radiotherapy is the insertion guiding manner of the insertion needle, the insertion needle needs to be accurately inserted into a target area, namely the front end of the insertion needle needs to be accurately inserted into a dwell point, and the correct insertion direction and insertion depth need to be preset, so that adjacent organs such as rectum, bladder and the like are prevented from being injured.

At present, some possible embodiments are: firstly, performing vagina building in a filling mode to obtain a three-dimensional vagina model, then determining the number of the stay points and the positions of the stay points relative to the vagina model, then obtaining a three-dimensional vagina model with an insertion needle channel by adopting a three-dimensional modeling method, and then manufacturing a vagina insertion needle applicator mould in a 3D printing mode.

However, this method can obtain a high-precision mold for an individual patient, but the vaginal modeling process is complex, the efficiency is low, the method is only suitable for a single patient, the method has no universality, and the repeatability of the mold is not completely guaranteed because the correlator of the patient changes at different times, so that one patient may need to make the mold many times. At present, some fixed implantation needle applicators exist, but the applicators all adopt fixed implantation needle guide holes, cannot change the position and cannot obtain a high-precision standing point.

In another example, the patent application No. 201720875978.1 discloses a multichannel aftervaginal treatment device, which includes a rotary body-shaped treatment device body, wherein the treatment device body is coaxially provided with a through hole-shaped introduction hole for inserting a treatment tube, such as a vaginal tube or a uterine cavity tube, the treatment device body is further provided with a through hole-shaped insertion hole which is on the same plane with an opening of the introduction hole and has an included angle smaller than 90 ° with an axis of the introduction hole, and the insertion hole is used for inserting a treatment needle, such as an insertion needle.

When in use, the treatment device body is inserted into the vagina, the leading-in hole on the treatment body is used for inserting a treatment tube, such as the vaginal tube, one end of the vaginal tube is connected with a radioactive source, and the other end of the vaginal tube passes through the leading-in hole to reach the infected part in the vagina for radiotherapy; the treatment needle is inserted into the infected part through the insertion needle hole on the treatment device body, and the infected part is subjected to targeted radiotherapy, so that the radiation position is more accurate, and the radiotherapy effect is optimized.

However, in order to facilitate the insertion of the treatment tube and the treatment needle, the opening diameters of the introduction hole and the insertion hole need to be larger than those of the treatment tube and the treatment needle, so that the treatment tube and the treatment needle may be displaced.

Therefore, the patent application adopts the following solution: the tail end of the treatment device body is provided with an annular groove, namely the spherical end surface of the treatment device body is provided with the annular groove, so that a rubber band can be fixed in the annular groove, the insertion needle is bound, and the insertion needle is prevented from being separated outwards.

However, this fixing method can only be used for fixing the insertion needle and is convenient and inconvenient to operate.

Thirdly, in addition, the patent application with application number 201620114129.X also discloses a brachytherapy applicator template, the template is arranged in an integrated structure and comprises a cylindrical inserting part and a fixing part, the inserting part comprises an inserting end and a treatment end, the fixing part is connected with the inserting end of the inserting part, a through groove is formed in the inserting part from the inserting end to the treatment end, a plurality of near-end uterine bypass holes and far-end uterine bypass holes for the inserting needle to pass through are formed in the circumferential surface of the treatment end of the inserting part, an intracavity applicator through hole is formed in the top of the treatment end, when the applicator is placed, the intracavity brachytherapy applicator is firstly placed in the cavity, and then the template is placed in the vagina.

This patent application is for the fixed needle of planting that is located intracavity applicator through-hole intracavity brachytherapy applicator, distal end palace by pass in the hole, and the scheme of its adoption is: the hole walls of the far-end uterine bypass hole and the through hole of the intracavity source applicator are of frosted structures, and the hole wall structures of the frosted structures enable the inserted inserting needle to have higher friction coefficient, so that the connection strength is further enhanced.

However, the formation process of the frosted structure is complicated and is not easy to implement.

Therefore, a scheme for conveniently fixing the insertion needle and the treatment tube is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a source ware subassembly is executed in treatment, this subassembly includes treatment device body, elasticity locating part, and wherein elasticity locating part includes spacing ring and stopper, and the installation can be selectively joined in marriage to the stopper, can be fixed simultaneously to treatment needle person to treatment needle and treatment pipe as required, has simple structure, fixed quick, select for use nimble advantage.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

a treatment applicator assembly comprises an integrally formed treatment device body, wherein the treatment device body comprises a head part, a cylindrical main body part and a rear part, the treatment device body is provided with a pin hole and a pin hole which are sequentially communicated with the head part, the main body part and the rear part, the pin hole and the pin hole are respectively used for inserting a treatment needle and a treatment tube, the circumferential surface of the main body part is provided with an annular mounting groove, and the head part and the rear part are both provided with mounting grooves;

the treatment applicator assembly also comprises an elastic limiting part arranged on the treatment device body, wherein the elastic limiting part comprises a limiting ring and a limiting plug which can be arranged in the mounting groove of the head part or the rear part;

the limiting ring is fixed in the annular mounting groove, a first limiting hole is formed in the limiting ring corresponding to the pin inserting hole, and the aperture of the first limiting hole is smaller than the diameter of the treatment needle;

the limiting plug is provided with a second limiting hole corresponding to the inserting tube hole, and the aperture of the second limiting hole is smaller than the diameter of the treatment tube.

Preferably, the stopper is disposed in the mounting groove of the head.

Preferably, the limit plug is mounted in the mounting groove of the rear portion.

Preferably, a positioning strip is further arranged in the annular mounting groove, the positioning strip is parallel to the axis direction of the main body part, and a positioning groove matched with the positioning strip is formed in the inner ring of the limiting ring.

Preferably, the positioning strips are arranged in a plurality of circumferential directions around the main body part, and the positioning grooves are arranged in one-to-one correspondence with the positioning strips.

Preferably, the limiting plug comprises an insertion cylinder matched with the insertion tube hole, and the second limiting hole is formed in the insertion cylinder.

Preferably, conical holes are symmetrically formed in two sides of the first limiting hole, the smaller ends of the two conical holes are respectively communicated with two ends of the first limiting hole, and the smaller ends of the two conical holes are communicated with the pin inserting hole.

Preferably, a plurality of fan-shaped process grooves are uniformly distributed at intervals around the center of the plug-in pipe hole at the front end and/or the rear end of the head part.

Compared with the prior art, the utility model discloses profitable technological effect has been obtained:

1. the treatment subassembly can only install the spacing ring on the treatment device body, fix the treatment needle through setting up the first spacing pore on the spacing ring, the treatment needle inserts from the rear portion of treatment device body, wear out from the head behind the main part, because the aperture of first spacing pore is less than the diameter of treatment needle and the spacing ring has elasticity, can take place elastic deformation to a certain extent, after the treatment needle passes first spacing pore to predetermined position, borrow the elastic shrinkage power of spacing ring, with the spacing fixed of treatment needle, the holding strength is high, and spacing ring and treatment device body are different materials, the detachable processing reduces the processing degree of difficulty, the production of being convenient for.

2. The treatment subassembly can also the optional installation stop cock, when the stop cock sets up the head at the treatment device body, the treatment pipe penetrates from the head of treatment device body before using, wear out from the rear portion behind the main part, similar with the spacing fixed principle of spacing ring, because the aperture in the spacing hole of second is less than the diameter of treatment pipe and the spacing ring has elasticity, can take place certain degree elastic deformation, after the treatment pipe passed spacing hole of second to predetermined position, borrow by the elastic contraction power of stop cock, with treatment pipe spacing fixed.

3. When the limiting plug is arranged at the head of the treatment device body, the treatment tube penetrates from the head of the treatment device body before use and penetrates out from the rear part after the treatment tube is used, the principle of limiting and fixing is similar to that of a limiting ring, elastic deformation of a certain degree can occur due to the fact that the aperture of the second limiting hole is smaller than the diameter of the treatment tube and the limiting ring has elasticity, and after the treatment tube penetrates through the second limiting hole to a preset position, the treatment tube is limited and fixed by means of elastic contraction force of the limiting plug.

4. The annular mounting groove is internally provided with a positioning strip, so that the first limiting hole on the limiting ring is aligned with the contact pin hole arranged on the treatment device body.

5. The purpose of arranging the process groove on the front end of the head of the therapeutic device body is to improve the strength, so that the structure and the shape of the head are not easy to damage or deform.

6. The conical holes are formed in the two sides, located in the first limiting hole, of the limiting ring, so that the therapeutic needle can be conveniently guided to penetrate through the first limiting hole, and the conical holes are symmetrically formed in the two sides of the first limiting hole, so that the limiting ring is not divided into two parts, and installation is facilitated.

7. The limiting plug is provided with a plug-in cylinder, so that the limiting plug is convenient to be installed and matched with the therapeutic device body.

Drawings

FIG. 1 is a schematic view of the overall structure of a pre-assembled limit plug according to an embodiment of the present invention;

FIG. 2 is an exploded view of the embodiment of the present invention with a stopper before fitting;

FIG. 3 is a front view of an alternative front mounted stop plug according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along the plane A-A in FIG. 3;

fig. 5 is a schematic view of the overall structure of the limiting plug after being assembled;

fig. 6 is an exploded schematic view of the limit plug after assembly of the embodiment of the present invention;

fig. 7 is a front view of an alternative rear mounted stopper according to an embodiment of the present invention;

fig. 8 is a sectional view taken along the plane B-B in fig. 7.

Wherein, the technical characteristics that each reference numeral refers to are as follows:

1. a treatment device body; 101. a head portion; 1011. installing a groove; 1012. a process tank; 102. a main body portion; 1021. an annular mounting groove; 1022. a positioning bar; 103. a rear portion; 1031. default gaps; 2. an elastic limiting part; 201. a limiting ring; 2011. a first limit hole; 2012. positioning a groove; 2013. chamfering with an arc; 2014. a conical bore; 202. a limiting plug; 2021. a second limiting hole; 2022. inserting a cylinder; 3. a pin inserting hole; 4. a cannula hole; 5. and (4) a process auxiliary groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following specific embodiments.

The embodiment discloses a treatment source applicator assembly, refer to fig. 1-8, including treatment device body 1 and the elastic locating part 2 that is fixed in on treatment device body 1, this treatment device body 1 is integrated into one piece, treatment device body 1 includes circular-arc head 101, cylindric main part 102 and discoid rear portion 103, set up in proper order on the treatment device body 1 and communicate head 101, main part 102 and rear portion 103's contact pin hole 3, contact pin hole 4, contact pin hole 3, contact pin hole 4 are used for pegging graft treatment needle, the grafting treatment pipe respectively, treatment needle, treatment pipe are prior art, neither show in the figure.

Referring to fig. 2, 4, 6 and 8, an annular mounting groove 1021 is formed on the circumferential surface of the main body portion 102, both the head portion 101 and the rear portion 103 are provided with mounting grooves 1011, the elastic limiting member 2 includes a limiting ring 201 and a limiting plug 202 which can be mounted in the mounting groove 1011 of the head portion 101 or the mounting groove 1011 of the rear portion 103, the limiting ring 201 is fixed in the annular mounting groove 1021, a first limiting hole 2011 is formed in the limiting ring 201 corresponding to the pin insertion hole 3, and the diameter of the first limiting hole 2011 is smaller than the diameter of the treatment needle;

the limit plug 202 is provided with a second limit hole 2021 corresponding to the cannula hole 4, and the aperture of the second limit hole 2021 is smaller than the diameter of the therapeutic tube.

Referring to fig. 2, a positioning strip 1022 is further disposed in the annular mounting groove 1021, the positioning strip 1022 is parallel to the axial direction of the main body portion 102, and a positioning groove 2012 engaged with the positioning strip 1022 is disposed on the inner ring of the limiting ring 201.

A positioning strip 1022 is disposed in the annular mounting groove 1021, so that the first limiting hole 2011 on the limiting ring 201 is aligned with the pin hole 3 formed on the treatment device body 1.

The two sides of the inner ring of the limit ring 201 are provided with arc chamfers 2013, and the limit ring 201 is sleeved in the annular mounting groove 1021 from the head 101 of the treatment device body 1, so that the limit ring 201 is convenient to mount.

The positioning bars 1022 are arranged in a plurality of numbers around the circumference of the main body portion 102, and the positioning grooves 2012 are arranged in one-to-one correspondence with the positioning bars 1022.

The circumferential surface of the main body part 102 and the space between the positioning strips 1022 are also provided with process auxiliary grooves 5, the treatment device body 1 is integrally formed by injection molding, and the arrangement of the process auxiliary grooves 5 is beneficial to drawing and reducing the generation of bubble defects.

The limit plug 202 can be optionally installed on the head portion 101, referring to fig. 1 to 4, and the limit plug 202 can also be optionally installed on the rear portion 103, referring to fig. 5 to 8.

Referring to fig. 2 and 5, a plurality of fan-shaped process grooves 1012 are uniformly distributed on the front end and the rear part 103 of the head part 101 at intervals around the center of the plug-in pipe hole 4.

The process grooves 1012 of the head part 101 and the rear part 103 are all set to be four, every two process grooves 1012 are symmetrically arranged, the mounting grooves 1011 are located between the process grooves 1012 on the two sides, the structure is reasonably arranged, and the head part 101 is high in structural strength and not prone to deformation.

Referring to fig. 4, conical holes 2014 are symmetrically arranged on two sides of the first limiting hole 2011, the smaller ends of the two conical holes 2014 are respectively communicated with two ends of the first limiting hole 2011, and the smaller ends of the two conical holes 2014 are both communicated with the pin hole 3.

The conical holes 2014 are formed in the two sides of the first limiting hole 2011 on the limiting ring 201, so that the therapeutic needle can be conveniently guided to pass through the first limiting hole 2011, the conical holes 2014 are symmetrically formed in the two sides of the first limiting hole 2011, the limiting ring 201 does not have a positive or negative division, and installation is facilitated.

The limiting plug 202 comprises an insertion cylinder 2022 matched with the insertion tube hole 4, and the second limiting hole 2021 is formed in the insertion cylinder 2022.

The rear portion 103 is symmetrically provided with arc-shaped default gaps 1031, which are beneficial to grasping the rear portion 103, facilitating taking and placing the treatment device body 1 and adjusting the position of the treatment device body 1, reducing the overall occupied area of the rear portion 103, and reducing discomfort for patients.

The limiting ring 201 and the limiting plug 202 can be a silica gel ring or a silica gel plug, and can also be a rubber ring or a rubber plug, such as a butyl ring or a butyl plug.

The use process and principle of the embodiment are as follows:

taking the example that the limiting plug 202 is selectively installed on the head 101: when the treatment assembly of this embodiment is used, the elastic limiting member 2 is assembled to the treatment device body 1, that is, the limiting ring 201 is installed in the annular installation groove 1021, the first limiting hole 2011 is aligned with the pin hole 3, and the limiting plug 202 is installed in the installation groove 1011 of the front portion 101.

The treatment tube is then passed through the head 101 of the treatment device body 1 in such a way as to reduce the possibility of the stopper 202 falling out of the mounting recess 1011 during insertion of the treatment tube.

When the device is used for treating a patient, the treatment device body 1 is inserted into the vagina of the patient firstly, the head 101 is contacted with an affected part, then the needle inserting hole 3 at the corresponding position is selected according to the actual treatment requirement, the treatment needle is inserted into the treatment device body 1 from the rear part 103 until the treatment needle is inserted into the tissue of the affected part, and finally, corresponding physical radiotherapy is carried out.

After the treatment tube is inserted into the treatment device body 1, the treatment tube is limited and fixed by the elastic contraction force of the limiting plug 202, and similarly, after the treatment needle is inserted into the treatment device body 1, the treatment tube is limited and fixed by the elastic contraction force of the limiting ring 201, so that the positioning reliability and stability of the treatment tube and the treatment needle are maintained.

When the limit plug 202 is selectively installed on the rear portion 103, the utility model discloses a treatment device's use is similar to the aforesaid, and the difference lies in:

the treatment tube is passed through from the rear part 103 of the treatment device body 1, i.e. from the end where the stopper 202 is installed, in such a way as to reduce the possibility that the stopper 202 falls out of the installation groove 1011 during the insertion of the treatment tube.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the utility model in any way.

Claims (8)

1. A treatment source applicator assembly comprises an integrally formed treatment device body (1), wherein the treatment device body (1) comprises a head part (101), a cylindrical main body part (102) and a rear part (103), the treatment device body (1) is provided with a pin inserting hole (3) and a pin inserting hole (4) which are sequentially communicated with the head part (101), the main body part (102) and the rear part (103), the pin inserting hole (3) and the pin inserting hole (4) are respectively used for inserting a treatment needle and a treatment tube, and the treatment source applicator assembly is characterized in that the circumferential surface of the main body part (102) is provided with an annular mounting groove (1021), and the head part (101) and the rear part (103) are both provided with mounting grooves (1011);

the treatment applicator assembly further comprises an elastic limiting part (2) arranged on the treatment device body (1), wherein the elastic limiting part (2) comprises a limiting ring (201) and a limiting plug (202) which can be arranged in a mounting groove (1011) of the head part (101) or the rear part (103);

the limiting ring (201) is fixed in the annular mounting groove (1021), a first limiting hole (2011) is formed in the limiting ring (201) corresponding to the pin inserting hole (3), and the aperture of the first limiting hole (2011) is smaller than the diameter of the treatment needle;

the limiting plug (202) is provided with a second limiting hole (2021) corresponding to the plug-in pipe hole (4), and the aperture of the second limiting hole (2021) is smaller than the diameter of the treatment pipe.

2. The therapeutic applicator assembly of claim 1, wherein the stop plug (202) is disposed within the mounting groove (1011) of the head (101).

3. The therapeutic applicator assembly of claim 1, wherein the stop plug (202) is mounted within the mounting groove (1011) of the rear portion (103).

4. A therapeutic applicator assembly according to any of claims 1-3, wherein the annular mounting groove (1021) is further provided with a positioning strip (1022), the positioning strip (1022) is parallel along the axial direction of the main body part (102), and the inner ring of the stop collar (201) is provided with a positioning groove (2012) cooperating with the positioning strip (1022).

5. The therapy applicator assembly of claim 4, wherein the positioning bars (1022) are arranged in plurality around a circumference of the main body portion (102), the positioning slots (2012) being provided in one-to-one correspondence with the positioning bars (1022).

6. A treatment applicator assembly according to any one of claims 1 to 3, wherein the stop plug (202) comprises an insertion cylinder (2022) cooperating with the cannula bore (4), the second stop bore (2021) opening onto the insertion cylinder (2022).

7. The treatment applicator assembly according to claim 1, 2, 3 or 5, wherein the first limiting hole (2011) is symmetrically provided with conical holes (2014) at two sides, the smaller ends of the two conical holes (2014) are respectively communicated with two ends of the first limiting hole (2011), and the smaller ends of the two conical holes (2014) are both communicated with the needle inserting hole (3).

8. A treatment applicator assembly according to claim 1, 2, 3 or 5, wherein the front and/or rear portions (103) of the head (101) are evenly spaced with a plurality of fan-shaped process slots (1012) around the centre of the cannula bore (4).

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