Filling device for gastrointestinal surgery

Abstract

The invention belongs to the field of perfusion instruments, and particularly discloses a gastrointestinal surgery perfusion device which comprises a body, an inner cylinder, an outer cylinder arranged on the periphery of the inner cylinder and a four-way seat arranged between the inner cylinder and the outer cylinder. The liquid filling mechanism comprises a piston rod I arranged in the inner cylinder, a piston rod II arranged in the outer cylinder, and supplementing pieces arranged on the inner cylinder and the outer cylinder; the driving mechanism comprises a shell arranged at the rear end of the inner cylinder, a driving piece arranged in the shell and a conversion piece arranged on the driving piece; by means of the liquid filling mechanism, filling work of enema liquid in the auxiliary containing cavity can be automatically completed when liquid filling work is propelled, then continuous liquid filling work is achieved by circularly and alternately pushing the first piston rod and the second piston rod, continuous liquid filling can be achieved under the condition that the size of the device is not increased, and personnel use is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of infusion devices, specifically relating to an infusion device for gastrointestinal surgery. Background Technology

[0002] Gastrointestinal surgery is a medical science that specializes in the study and treatment of gastrointestinal diseases. Gastrointestinal surgeons are mainly responsible for the diagnosis and treatment of gastrointestinal diseases, including gastric ulcers, gastric cancer, colon cancer, pancreatitis, cholecystitis, gallstones, etc. In order to keep the surgical area clean and prevent infection during some surgeries and treatments, gastrointestinal surgeons need to use an enema device to rinse the gastrointestinal tract before and after surgery.

[0003] Chinese patent CN220293923U discloses an infusion device for gastrointestinal surgery. This invention features an adjustment component on the outlet tube. By adjusting the size of the connection between the first and second outlet channels, the flow rate of liquid passing through the rolling ball per unit time is adjusted, thereby regulating the infusion speed. A push plate drives the rolling ball to rotate via a rotating plate seat and a rotating plate, which in turn drives the second outlet channel to rotate. The rotation angle of the second outlet channel can be adjusted arbitrarily according to the patient's actual needs. Operation is simple. A pushing component is also installed inside the reservoir. A bidirectional rotary motor drives a piston up and down via a threaded rod. When the maximum infusion speed cannot be achieved even with the adjustment component, the liquid in the reservoir can be squeezed out by the pushing component. This device not only adjusts the infusion speed according to the patient's actual situation but also reduces the workload of medical staff.

[0004] However, the movable range of the aforementioned patented piston is small, and when the enema fluid in the storage chamber is used up, it is necessary to stop the enema work for a long time to replenish it, making it impossible to carry out the enema work continuously, resulting in unsatisfactory work efficiency and inconvenience for personnel to use. Summary of the Invention

[0005] The purpose of this invention is to provide an infusion device for gastrointestinal surgery to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A gastrointestinal surgical infusion device includes a main body, comprising an inner cylinder, an outer cylinder disposed around the inner cylinder, and a four-way connector disposed between the inner and outer cylinders; an infusion mechanism including a piston rod 1 disposed within the inner cylinder, a piston rod 2 disposed within the outer cylinder, and supplementary components disposed on the inner and outer cylinders; a drive mechanism including a housing disposed at the rear end of the inner cylinder, a drive component disposed within the housing, and a conversion component disposed on the drive component; and a sealing mechanism including a fixed seat disposed between the inner and outer cylinders, a sealing component disposed within the fixed seat, and a tensioning component disposed on the sealing component.

[0008] Preferably, the output end of the four-way connector is provided with a liquid filling pipe, and a one-way valve is provided between the four-way connector and both the inner and outer cylinders.

[0009] Preferably, the supplementary component includes a guide tube disposed between the inner cylinder and the outer cylinder, connectors disposed on the inner cylinder and the outer cylinder respectively, and a one-way valve disposed on the connector.

[0010] Preferably, the driving component includes a motor disposed on the housing, a slatted rod disposed at the output end of the motor, and two transmission gears slidably disposed on the slatted rod.

[0011] Preferably, both piston rod one and piston rod two have toothed grooves on their surfaces, and the toothed grooves mesh with the transmission gear.

[0012] Preferably, the conversion component includes a shaft disposed within the housing, two reciprocating grooves respectively disposed on the shaft, a reciprocating slider slidably disposed on the reciprocating grooves, a bearing seat disposed between the reciprocating slider and the transmission gear, and a reduction gear set disposed between the shaft and the swivel rod.

[0013] Preferably, the sealing element includes a toothed block disposed within the fixed seat, and a spring disposed between the toothed block and the fixed seat.

[0014] Preferably, a sealing shell is provided on the toothed block surrounding the spring, and the toothed block is adapted to the toothed groove.

[0015] Preferably, the tensioning element includes a movable block disposed on the spring, a threaded cylinder disposed on the movable block, and a threaded rod disposed on the surface of the fixed seat, the threaded rod being threadedly connected to the threaded cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) The present invention can automatically replenish the enema fluid in the auxiliary cavity when the enema work is being carried out by the enema mechanism. Then, by cyclically and alternately pushing piston rod one and piston rod two, continuous enema work can be achieved. Continuous enema can be achieved without increasing the volume of the device, which is convenient for personnel to use.

[0018] (2) The present invention starts the motor through the drive mechanism, which can automatically and alternately push the piston rod one and the piston rod two to achieve continuous liquid filling. There is no need for staff to manually fill the liquid, which saves time and effort. The structure is small and compact, and it is convenient for personnel to use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a rear view of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the drive mechanism structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the sealing mechanism of the present invention;

[0024] Figure 6 This is a partial structural diagram of the threaded rod of the present invention.

[0025] In the diagram: 1. Main body; 2. Liquid filling mechanism; 3. Drive mechanism; 4. Sealing mechanism;

[0026] 101. Inner cylinder; 102. Outer cylinder; 103. Four-way connector; 104. One-way valve; 105. Filling pipe;

[0027] 201. Piston rod one; 202. Piston rod two; 203. Guide tube; 204. Connector; 205. One-way valve two;

[0028] 301. Housing; 302. Motor; 303. Gear groove; 304. Reduction gear set; 305. Spindle rod; 306. Reciprocating slider; 307. Bearing housing; 308. Reciprocating slide groove; 309. Shaft; 3010. Transmission gear;

[0029] 401. Fixed base; 402. Tooth block; 403. Spring; 404. Sealing shell; 405. Moving block; 406. Threaded cylinder; 407. Threaded rod. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] As attached Figure 1 To be continued Figure 6 As shown:

[0032] Example 1: This invention provides an infusion device for gastrointestinal surgery, comprising a main body 1, including an inner cylinder 101, an outer cylinder 102 disposed around the inner cylinder 101, and a four-way seat 103 disposed between the inner cylinder 101 and the outer cylinder 102; an infusion mechanism 2, including a piston rod 201 disposed in the inner cylinder 101, a piston rod 202 disposed in the outer cylinder 102, and supplementary components disposed on the inner cylinder 101 and the outer cylinder 102; a drive mechanism 3, including a housing 301 disposed at the rear end of the inner cylinder 101, a drive component disposed in the housing 301, and a conversion component disposed on the drive component; and a sealing mechanism 4, including a fixing seat 401 disposed between the inner cylinder 101 and the outer cylinder 102, a sealing component disposed in the fixing seat 401, and a tensioning component disposed on the sealing component.

[0033] Specifically, the output end of the four-way connector 103 is provided with an irrigation pipe 105. One-way valves 104 are provided between the four-way connector 103 and the inner cylinder 101 and the outer cylinder 102. One-way valves 104 can prevent the enema fluid pushed out from the inner cylinder 101 from flowing into the outer cylinder 102, or the enema fluid pushed out from the outer cylinder 102 from flowing into the inner cylinder 101.

[0034] Furthermore, the supplementary components include a guide tube 203 disposed between the inner cylinder 101 and the outer cylinder 102, connectors 204 disposed on the inner cylinder 101 and the outer cylinder 102 respectively, and a one-way valve 205 disposed on the connector 204, wherein the one-way valve 205 can prevent the enema fluid in the inner cylinder 101 or the outer cylinder 102 from flowing out through the connector 204.

[0035] As can be seen from the above, during the enema procedure, the two sets of connectors 204 can be connected to the external enema bag respectively. Then, the piston rod 1 201 is pushed to export the enema fluid in the inner cylinder 101 through the enema tube 105 for gastrointestinal enema. When the piston rod 1 201 is pushed, negative pressure is used to draw air from the outer cylinder 102 into the inner cylinder 101 through the guide tube 203. The piston rod 2 202 will move synchronously towards the rear end of the device due to the disappearance of air, and then the enema fluid in the enema bag will be drawn into the outer cylinder 102 through the connector 204. When the piston rod 1 201 moves to the end point so that the enema fluid in the inner cylinder 101 is completely exported, the piston rod 2 202 will move back to the initial position, so that the outer cylinder 102 is filled with enema fluid. At this time, the procedure is stopped. The piston rod 201 is pushed to drive the piston rod 202 instead, so that the enema fluid in the outer cylinder 102 can be discharged through the enema tube 105 for gastrointestinal enema. When the piston rod 202 is pushed, the air in the inner cylinder 101 is drawn into the outer cylinder 102 by the guide tube 203 through the negative pressure. The piston rod 201 will move synchronously towards the rear end of the device due to the disappearance of air, and then the enema fluid in the enema bag is drawn into the inner cylinder 101 through the connector 204. The enema fluid in the auxiliary cavity can be automatically replenished when the enema is pushed. The continuous enema can be achieved by alternately pushing the piston rod 201 and the piston rod 202 in a cycle. The continuous enema can be achieved without increasing the volume of the device, which is convenient for personnel to use.

[0036] Example 2: This example is basically the same as the previous example, except that the driving component includes a motor 302 disposed on the housing 301, a swivel rod 305 disposed on the output end of the motor 302, and two transmission gears 3010 slidably disposed on the swivel rod 305.

[0037] Specifically, both piston rod 201 and piston rod 202 have toothed grooves 303 on their surfaces, which mesh with the transmission gear 3010.

[0038] Furthermore, the conversion component includes a shaft 309 disposed within the housing 301, two reciprocating grooves 308 respectively disposed on the shaft 309, a reciprocating slider 306 slidably disposed on the reciprocating grooves 308, a bearing seat 307 disposed between the reciprocating slider 306 and the transmission gear 3010, and a reduction gear set 304 disposed between the shaft 309 and the spline 305. The reduction gear set 304 includes an intermittent gear disposed on the spline 305, a large gear disposed on the shaft 309, and a small gear disposed between the intermittent gear and the large gear, thereby realizing the reduction transmission between the spline 305 and the shaft 309.

[0039] As can be seen from the above, when performing the enema work, the motor 302 can be started. The motor 302 will drive the plum blossom rod 305 to rotate, which in turn drives the two transmission gears 3010 to rotate synchronously. The transmission gears 3010 will drive the piston rod 201 to move linearly by meshing with the tooth grooves 303 on the piston rod 201, thereby automatically pushing the enema fluid in the inner cylinder 101. When the plum blossom rod 305 rotates, it will drive the shaft 309 to rotate through the reduction gear set 304. The two reciprocating slides 308 face opposite directions. When the shaft 309 rotates, it will drive the two reciprocating sliders 306 to move synchronously through the reciprocating slides 308, which will drive the transmission gears 3010 to move synchronously. When the piston rod 201 moves to the end point and the enema fluid in the inner cylinder 101 is completely discharged, the transmission gears... 3010 will separate from the toothed groove 303 on piston rod 1 201 and engage with the toothed groove 303 on piston rod 2 202, thereby stopping the movement of piston rod 1 201 and instead driving piston rod 2 202 to move, thus automatically pushing and filling the enema fluid in the outer cylinder 102. When both reciprocating sliders 306 move to the end point, they will move synchronously through the reciprocating slide groove 308. When piston rod 2 202 moves to the end point so that the enema fluid in the outer cylinder 102 is completely discharged, the transmission gear 3010 will separate from the toothed groove 303 on piston rod 1 201 and engage with the toothed groove 303 on piston rod 1 201 again. By simply starting the motor 302, the piston rod 1 201 and piston rod 2 202 can be automatically and alternately pushed in a cycle to achieve continuous filling.

[0040] Example 3: This example is basically the same as the previous example, except that the sealing element includes a toothed block 402 disposed in the fixed seat 401 and a spring 403 disposed between the toothed block 402 and the fixed seat 401.

[0041] Specifically, a sealing shell 404 is provided on the toothed block 402 surrounding the spring 403, and the toothed block 402 is adapted to the toothed groove 303.

[0042] Furthermore, the tensioning element includes a movable block 405 disposed on the spring 403, a threaded cylinder 406 disposed on the movable block 405, and a threaded rod 407 disposed on the surface of the fixed base 401, the threaded rod 407 being threadedly connected to the threaded cylinder 406.

[0043] As can be seen from the above, the toothed block 402 will ensure the sealing of the inner cylinder 101 and the outer cylinder 102 by engaging with the toothed groove 303. The sealing shell 404 will further improve the sealing of the device. When the piston rod 1 201 and piston rod 202 move, the inclined surface of the toothed groove 303 will generate an inward oblique thrust on the toothed block 402 to push it into the fixed seat 401. The spring 403 will contract synchronously, so that the elastic thrust of the spring 403 will tightly press the toothed block 402 against the surface of the piston rod 1 201 or piston rod 202, thereby ensuring the sealing of the device. At the same time, after the device has been used for a period of time, the operator can rotate the threaded rod 407 to drive the movable block 405 to move through the threaded cylinder 406, shortening the distance between the movable block 405 and the toothed block 402, so as to compress the spring 403, ensure the elasticity of the spring 403, thereby ensuring the stability of the device, extending the service life of the device, and facilitating the use of personnel.

[0044] All standard parts used in this invention can be purchased commercially, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0045] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0046] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] The accompanying drawings of the embodiments disclosed in this invention only involve structures related to the embodiments disclosed in this invention. Other structures can refer to general designs. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gastrointestinal surgical infusion device, characterized in that, include, The main body (1) includes an inner cylinder (101), an outer cylinder (102) disposed around the inner cylinder (101), and a four-way seat (103) disposed between the inner cylinder (101) and the outer cylinder (102); The filling mechanism (2) includes a piston rod 1 (201) disposed in the inner cylinder (101), a piston rod 2 (202) disposed in the outer cylinder (102), and a supplementary component disposed on the inner cylinder (101) and the outer cylinder (102); The drive mechanism (3) includes a housing (301) disposed at the rear end of the inner cylinder (101), a drive member disposed within the housing (301), and a conversion member disposed on the drive member; The sealing mechanism (4) includes a fixed seat (401) disposed between the inner cylinder (101) and the outer cylinder (102), a sealing element disposed in the fixed seat (401), and a tensioning element disposed on the sealing element.

2. The infusion device for gastrointestinal surgery according to claim 1, characterized in that: The output end of the four-way seat (103) is provided with a filling pipe (105), and a one-way valve (104) is provided between the four-way seat (103) and the inner cylinder (101) and the outer cylinder (102).

3. The infusion device for gastrointestinal surgery according to claim 2, characterized in that: The supplementary components include a guide tube (203) disposed between the inner cylinder (101) and the outer cylinder (102), connectors (204) disposed on the inner cylinder (101) and the outer cylinder (102) respectively, and a one-way valve (205) disposed on the connector (204).

4. The gastrointestinal surgical infusion device according to claim 3, characterized in that: The driving component includes a motor (302) disposed on the housing (301), a swivel rod (305) disposed at the output end of the motor (302), and two transmission gears (3010) slidably disposed on the swivel rod (305).

5. The gastrointestinal surgical infusion device according to claim 4, characterized in that: Both piston rod one (201) and piston rod two (202) have toothed grooves (303) on their surfaces, and the toothed grooves (303) mesh with the transmission gear (3010).

6. The gastrointestinal surgical infusion device according to claim 5, characterized in that: The conversion component includes a shaft (309) disposed within the housing (301), two reciprocating grooves (308) respectively disposed on the shaft (309), a reciprocating slider (306) slidably disposed on the reciprocating grooves (308), a bearing seat (307) disposed between the reciprocating slider (306) and the transmission gear (3010), and a reduction gear set (304) disposed between the shaft (309) and the spur rod (305).

7. The gastrointestinal surgical infusion device according to claim 6, characterized in that: The sealing element includes a toothed block (402) disposed within the fixed seat (401) and a spring (403) disposed between the toothed block (402) and the fixed seat (401).

8. The gastrointestinal surgical infusion device according to claim 7, characterized in that: A sealing shell (404) is provided on the tooth block (402) surrounding the spring (403), and the tooth block (402) is adapted to the tooth groove (303).

9. The gastrointestinal surgical infusion device according to claim 8, characterized in that: The tensioning element includes a movable block (405) disposed on the spring (403), a threaded cylinder (406) disposed on the movable block (405), and a threaded rod (407) disposed on the surface of the fixed seat (401), wherein the threaded rod (407) is threadedly connected to the threaded cylinder (406).

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