CN221084293U - Negative pressure drainage ball - Google Patents
Negative pressure drainage ball Download PDFInfo
- Publication number
- CN221084293U CN221084293U CN202322055699.9U CN202322055699U CN221084293U CN 221084293 U CN221084293 U CN 221084293U CN 202322055699 U CN202322055699 U CN 202322055699U CN 221084293 U CN221084293 U CN 221084293U
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- Prior art keywords
- drainage ball
- ring
- negative pressure
- inner ring
- bottle
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- 238000007789 sealing Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 6
- 241000405070 Percophidae Species 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model provides a negative pressure drainage ball which comprises a drainage ball body, a bottle connector and a threaded ferrule, wherein the head of the drainage ball body is provided with a hole, one end of the bottle connector is in interference fit with the hole of the drainage ball body, the other end of the bottle connector is in threaded connection with the threaded ferrule, the bottle connector is clamped and fixed at the hole of the drainage ball body through the threaded ferrule, the inner side of the hole of the drainage ball body is provided with a step inner ring, the bottom of the bottle connector is integrally connected with an annular outer expansion part corresponding to the step inner ring, and the annular outer expansion part is tightly combined with the step inner ring through a meshing piece. The utility model improves the tightness of the opening of the drainage ball and avoids the situation that the opening of the drainage ball breaks away.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a negative pressure drainage ball.
Background
The negative pressure drainage ball is widely used in negative pressure drainage treatment due to good elasticity and portability. The negative pressure drainage ball is exhausted and compressed to form a negative pressure source, and the negative pressure source is connected with the drainage tube to conduct negative pressure drainage on the treatment area.
Traditional negative pressure drainage ball is for single-use negative pressure drainage and its drainage flat tube as disclosed in CN201420391608.7, and drainage ball one end trompil department is equipped with the bottle and connects, and bottle connects one end interference setting in the spheroidal trompil of drainage, and the bottle connects the trompil department at the drainage ball of screw thread lasso centre gripping fixing through the external diameter.
The negative pressure drainage ball of this kind of structure, doctor when compressing the spheroid, especially when compressing the spheroid that is close to bottle joint department, drainage ball trompil department can outwards stretch because of own elasticity to can appear breaking away from the condition of screw lasso and bottle joint centre gripping, the drainage ball loses the leakproofness, leads to whole drainage ball's function to lose.
Disclosure of utility model
In order to solve the defects in the prior art, the utility model provides the negative pressure drainage ball, so that the tightness of the opening of the drainage ball is improved, and the situation that the opening of the drainage ball is separated is avoided.
The technical scheme of the utility model is as follows: the utility model provides a negative pressure drainage ball, includes drainage ball main part, bottle joint and screw thread lasso, and drainage ball main part head trompil, bottle joint one end interference setting are in the trompil department of drainage ball main part, and the bottle joint other end and screw thread lasso threaded connection and bottle joint are fixed in the trompil department of drainage ball main part through screw thread lasso centre gripping, the trompil department inboard of drainage ball main part is equipped with the step inner ring, and bottle joint bottom an organic whole is connected with the annular outer portion that expands corresponding with the step inner ring, and through the meshing piece close combination between annular outer portion and the step inner ring. The annular outer expanding part of the bottle connector is used for axially extruding the step inner ring of the drainage ball body, so that the clamping area between the drainage ball body and the bottle connector is increased, namely, when the drainage ball opening is compressed, the resistance born by the drainage ball opening is increased, the tightness of the drainage ball opening is enhanced, and the resistance of separation of the drainage ball opening is further improved by arranging the meshing piece between the annular outer expanding part and the step inner ring, so that the situation that the drainage ball opening is separated is effectively avoided.
The outer side of the opening of the drainage ball body is provided with a cylindrical outer ring, and an inner ring part corresponding to the cylindrical outer ring and a spherical part corresponding to the drainage ball body are sequentially arranged below the inner threads of the threaded ferrule. The inner ring part of the thread ring sleeve radially extrudes the cylindrical outer ring of the drainage sphere, so that the clamping area of the drainage sphere main body between the bottle connector and the thread ring sleeve is further increased, and the separation resistance of the drainage sphere opening is further improved.
The engagement piece is a plurality of positioning bulges, the positioning bulges are arranged on the surface of the annular outer expansion part at intervals along the circumferential direction, and the bottom of the step inner ring is provided with positioning grooves corresponding to the positioning bulges.
The engagement piece is at least one annular convex rib, the annular convex rib is coaxially arranged on the surface of the annular outer expansion part, and an annular groove corresponding to the annular convex rib is formed in the bottom of the step inner ring.
The bottle connects and the trompil department contact position of drainage ball main part is equipped with the sealing ring, and the bottle connects through sealing ring and the trompil department interference contact of drainage ball main part. The interference seal of the sealing ring ensures the tightness between the tapping position of the drainage ball and the bottle joint.
The outer edge of the bottom of the annular outer expansion part is provided with an arc chamfer, and the radius of the arc chamfer is equal to the thickness of the annular outer expansion part. The design of circular arc chamfer can reduce certain installation resistance when bottle joint and drainage ball main part equipment.
The drainage device is characterized by further comprising a PU ring, wherein the PU ring is sleeved on the outer side of the cylindrical outer ring and is fixedly clamped between the thread rings and the drainage ball body through the thread rings, a hanging lug part is arranged on the PU ring, one end of the hanging lug part is integrally connected with the outer side of the PU ring, and the other end of the hanging lug part extends to the outer side of the thread rings and is connected with the hanging buckle. The PU ring can further lock the cylindrical outer ring, and when the drainage ball main body opening is separated, radial resistance is provided, so that the situation that the drainage ball opening is separated is further avoided.
The beneficial effects of the utility model are as follows:
This device carries out axial extrusion through the annular of bottle joint and expands the portion to the spheroidal step inner ring of drainage, the radial extrusion is carried out to the spheroidal cylindricality outer loop of drainage to thread lasso inner ring portion, has increased the centre gripping area of drainage ball main part between bottle joint and thread lasso, compresses promptly in drainage ball trompil department, the resistance that receives when the drainage ball trompil department takes place to break away from increases, the leakproofness of drainage ball trompil department also strengthens relatively, through set up the engaging piece between annular expanding portion and step inner ring, further improve the resistance that the drainage ball trompil department separates, thereby the effectual condition that avoids appearing the drainage ball trompil department and breaks away from.
Drawings
FIG. 1 is a cross-sectional view of the present utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is a schematic view of the construction of the bottle adapter of the present utility model;
FIG. 4 is a schematic view of a threaded ferrule of the present utility model;
FIG. 5 is a cross-sectional view of the drainage ball body of example 1;
Fig. 6 is a cross-sectional view of the drainage ball body in example 2.
Reference numerals: 1. a drainage ball body; 11. a step inner ring; 12. a cylindrical outer ring; 13. a positioning groove; 14. an annular groove; 2. a bottle joint; 21. an external thread; 22. a seal ring; 23. an annular expansion portion; 24. positioning the bulge; 3. a threaded ferrule; 31. an internal thread; 32. an inner ring portion; 33. a spherical surface portion; 4. a PU ring; 41. ear hanging; 5. hanging buckle; 6. a liquid discharge pipe; 7. a pipette; 8. duckbill check valve.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the following description is made in detail with reference to the accompanying drawings, and other embodiments obtained by those skilled in the art without making any inventive effort are all within the scope of the present utility model.
As shown in fig. 1-5, the utility model provides a negative pressure drainage ball, which comprises a drainage ball main body 1, a bottle joint 2 and a threaded ferrule 3, wherein the head of the drainage ball main body 1 is provided with a hole, one end of the bottle joint 2 is arranged at the hole of the drainage ball main body 1 in an interference way, the other end of the bottle joint 2 is in threaded connection with an internal thread 31 of the threaded ferrule 3 through an external thread 21, the bottle joint 2 is clamped and fixed at the hole of the drainage ball main body 1 through the threaded ferrule 3, a liquid discharge pipe 6 and a liquid suction pipe 7 are arranged on the bottle joint 2 side by side, the liquid discharge pipe 6 and the liquid suction pipe 7 are communicated with the inside of the drainage ball main body 1, a duckbill check valve 8 is arranged on the liquid suction pipe 7 extending into the bottle joint 2, a step inner ring 11 is arranged at the inner side of the hole of the drainage ball main body 1, an annular outer expansion part 23 corresponding to the step inner ring 11 is integrally connected to the bottom of the bottle joint 2, the annular outer expansion part 23 and the step inner ring 11 are tightly combined through an engagement piece, in the embodiment 1, the engagement piece is a plurality of positioning bulges 24, the positioning bulges 24 are arranged at intervals along the circumferential direction, the positioning bulges 24 are arranged on the annular expansion part 23, and the positioning bulges are corresponding to the positioning bulges 13 are arranged on the bottom surfaces of the step inner ring 11.
After the bottle connector 2 is clamped and fixed through the threaded ferrule 3, the annular outer expansion part 23 of the bottle connector 2 axially extrudes the step inner ring 11 of the drainage ball body, so that the clamping area between the drainage ball body 1 and the bottle connector 2 is increased, namely, when the drainage ball opening is compressed, the resistance born by the drainage ball opening is increased, the tightness of the drainage ball opening is enhanced, and the separation resistance of the drainage ball opening is further improved by arranging the positioning bulge 24 and the positioning groove 13 which are matched with each other between the annular outer expansion part 23 and the step inner ring 11, so that the situation that the drainage ball opening is separated is effectively avoided.
The outer side of the opening of the drainage ball body 1 is provided with a cylindrical outer ring 12, and an inner ring part 32 corresponding to the cylindrical outer ring 12 and a spherical surface part 33 corresponding to the drainage ball body 1 are sequentially arranged below the inner threads 31 of the thread ring 3. After the bottle connector 2 is fixed through the thread ring 3, the spherical surface part 33 of the thread ring 3 is attached to the surface of the drainage ball body 1, the inner ring part 32 of the thread ring 3 radially extrudes the cylindrical outer ring 12 of the drainage ball body, the clamping area of the drainage ball body 1 between the bottle connector 2 and the thread ring 3 is further increased, and then the separation resistance of the drainage ball opening is improved.
The bottle joint 2 is provided with a sealing ring 22 at the contact position of the bottle joint 2 and the opening of the drainage ball main body 1, and the bottle joint 2 is in interference contact with the opening of the drainage ball main body 1 through the sealing ring 22. The interference seal of the sealing ring 22 ensures the tightness between the tapping point of the drainage ball and the bottle connector 2.
The bottom outer fringe of annular outer portion 23 is equipped with the circular arc chamfer, the radius R of circular arc chamfer equals the thickness H of annular outer portion 23. The design of the circular arc chamfer can reduce certain installation resistance when the bottle joint 2 and the drainage ball main body 1 are assembled, and does not influence the separation resistance generated by the annular outward expansion part 23.
The negative pressure drainage ball further comprises a PU ring 4, the PU ring 4 is sleeved on the outer side of the cylindrical outer ring 12 and is clamped and fixed between the drainage balls through the threaded ferrule 3, the PU ring 4 is provided with a hanging lug part 41, one end of the hanging lug part 41 is integrally connected with the outer side of the PU ring 4, and the other end of the hanging lug part 41 extends to the outer side of the threaded ferrule 3 and is connected with the hanging buckle 5. The PU ring 4 thickness is within 1mm, and PU ring 4 can not exert an influence to the connection of screw lasso 3 and bottle joint 2, and PU ring 4 can further lock the outer ring 12 of cylindricality simultaneously, when the separation of drainage ball main part 1 trompil department, provides a radial resistance, and then further avoids appearing the condition that the drainage ball trompil department breaks away from.
As shown in fig. 6, in embodiment 2, the engagement member is at least one annular rib coaxially disposed on the surface of the annular expanding portion 23, and the bottom of the step inner ring 11 is provided with an annular groove 14 corresponding to the annular rib.
When the technical scheme is implemented, taking example 1 as an example, when the negative pressure drainage ball is assembled, the duckbill check valve 8 is arranged on the liquid suction pipe 7 in the bottle joint 2, the opening of the head of the drainage ball main body 1 is enlarged through the ball flaring equipment, the external thread 21 on the bottle joint 2 is arranged in the opening at one position, the drainage ball main body 1 is taken down from the equipment, the positioning bulge 24 of the flat joint is matched with the positioning groove 13 on the drainage ball main body 1 by adjusting at the moment, the PU ring 4 is sleeved on the cylindrical outer ring 12 of the drainage ball main body 1, the thread ferrule 3 is screwed with the bottle joint 2, the assembly of the negative pressure drainage ball is completed, and the sealing performance of the opening of the drainage ball is effectively enhanced.
Claims (7)
1. The utility model provides a negative pressure drainage ball, includes drainage ball main part, bottle joint and screw thread lasso, and drainage ball main part head trompil, bottle joint one end interference setting are in the trompil department of drainage ball main part, and the bottle joint other end and screw thread lasso threaded connection and bottle joint are fixed in the trompil department of drainage ball main part through screw thread lasso centre gripping, a serial communication port, the trompil department inboard of drainage ball main part is equipped with the step inner ring, and bottle joint bottom an organic whole is connected with the annular outer portion that expands corresponding with the step inner ring, and through engagement spare close combination between annular outer portion and the step inner ring.
2. The negative pressure drainage ball according to claim 1, wherein a cylindrical outer ring is arranged outside the opening of the drainage ball body, and an inner ring part corresponding to the cylindrical outer ring and a spherical part corresponding to the drainage ball body are sequentially arranged below the inner thread of the threaded ferrule.
3. The negative pressure drainage ball according to claim 1, wherein the engagement member is a plurality of positioning protrusions, the positioning protrusions are arranged on the surface of the annular outer expansion part at intervals along the circumferential direction, and positioning grooves corresponding to the positioning protrusions are formed in the bottom of the step inner ring.
4. The negative pressure drainage ball according to claim 1, wherein the engagement member is at least one annular rib coaxially arranged on the surface of the annular outer expansion portion, and an annular groove corresponding to the annular rib is formed in the bottom of the step inner ring.
5. The negative pressure drainage ball according to claim 2, wherein a sealing ring is arranged at a contact position of the bottle connector and the opening of the drainage ball body, and the bottle connector is in interference contact with the opening of the drainage ball body through the sealing ring.
6. The negative pressure drainage ball according to claim 2, wherein the outer edge of the bottom of the annular outer expansion part is provided with an arc chamfer, and the radius of the arc chamfer is equal to the thickness of the annular outer expansion part.
7. The negative pressure drainage ball according to claim 2, further comprising a PU ring, wherein the PU ring is sleeved on the outer side of the cylindrical outer ring and is clamped and fixed between the drainage balls through the threaded ferrule, the PU ring is provided with a hanging lug part, one end of the hanging lug part is integrally connected with the outer side of the PU ring, and the other end of the hanging lug part extends to the outer side of the threaded ferrule and is connected with the hanging buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322055699.9U CN221084293U (en) | 2023-08-02 | 2023-08-02 | Negative pressure drainage ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322055699.9U CN221084293U (en) | 2023-08-02 | 2023-08-02 | Negative pressure drainage ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221084293U true CN221084293U (en) | 2024-06-07 |
Family
ID=91314938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322055699.9U Active CN221084293U (en) | 2023-08-02 | 2023-08-02 | Negative pressure drainage ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221084293U (en) |
-
2023
- 2023-08-02 CN CN202322055699.9U patent/CN221084293U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |