CN112512620A - Infusion device comprising a clamping device - Google Patents
Infusion device comprising a clamping device Download PDFInfo
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- CN112512620A CN112512620A CN201980029785.6A CN201980029785A CN112512620A CN 112512620 A CN112512620 A CN 112512620A CN 201980029785 A CN201980029785 A CN 201980029785A CN 112512620 A CN112512620 A CN 112512620A
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- clamping
- infusion
- lever
- housing
- infusion line
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- 238000001802 infusion Methods 0.000 title claims abstract description 193
- 238000005086 pumping Methods 0.000 claims abstract description 28
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000002572 peristaltic effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
An infusion device (1) comprising a housing (10), a pumping mechanism (12) and a clamping mechanism (2), the housing (10) having a receiving portion (100) for receiving an infusion line (20); the pumping mechanism (12) for delivering a medical fluid through an infusion line (20) received in the receptacle (100); the clamping mechanism (2) has a clamping element (20), the clamping element (20) being pivotably connected to the housing (10) and being movable relative to the housing (10) between a clamping position, in which the clamping element (20) acts on the infusion line (20) received in the receptacle (100) to locally clamp the infusion line (20), and a release position, in which the clamping element (20) allows a flow through the infusion line (20). Herein, the clamping mechanism (2) comprises a first lever element (22) pivotably connected to the housing (10) and a second lever element (21) connecting the first lever element (22) to the clamping element (20), the second lever element (21) being operable to act on the clamping element (20) for moving the clamping element (20) into the clamping position and/or for holding the clamping element (20) in the clamping position.
Description
Description
The present invention relates to an infusion device and a method for operating an infusion device according to the preamble of claim 1.
The infusion device comprises a housing having a receiving portion for receiving an infusion line, a pumping mechanism, and a clamping mechanism; the pumping mechanism for delivering a medical fluid through an infusion line received in the receptacle; the clamping mechanism has a clamping element pivotally connected to the housing and movable relative to the housing between a clamping position for acting on the infusion line received in the receptacle to partially clamp the infusion line and a release position for allowing flow through the infusion line.
Infusion sets, in particular positive-displacement (peristaltic) infusion sets, are used to deliver medical fluids, such as drugs or nutritional liquids, for example for enteral feeding, to a patient and for this purpose act on an infusion line via its pumping mechanism. The infusion line can be connected on one end to a container containing e.g. a medical fluid and on its other end to a patient, and the pumping mechanism exerts a pumping force on the infusion line, e.g. in a peristaltic manner, such that the medical fluid is transported through the infusion line towards the patient.
For delivering a medical fluid to a patient, an infusion set comprising an infusion line is arranged on the infusion set, the infusion line being received in a receiving portion of the infusion set. In this context, when arranging the infusion line on the infusion device, it should be avoided that the medical fluid flows in an uncontrolled manner (so-called free-flow situation) through the infusion line to the patient. To this end, the infusion set comprises a clamping mechanism which should stop the flow through the infusion line when the door of the infusion set is closed (before the actual infusion operation is started) in order to be able to perform an integrity check, in particular a so-called OCS (occlusion check system) test, by which the correct operation of the system, in particular of the pumping mechanism, is tested. To begin an infusion operation, the clamping mechanism is opened so that flow through the infusion line can occur under the control of the pumping mechanism.
In the infusion device known from US 2010/0040481 a1, a sliding clamp acts on the infusion line, which automatically closes to clamp the infusion line when the door of the infusion device is closed. In order to open the sliding clamp for carrying out an infusion operation, the opening mechanism acts on the sliding clamp by means of a finger, so that the clamping of the infusion line is released and a flow through the infusion line can take place.
It would be desirable to provide an infusion device that is compatible with different infusion lines from different manufacturers. Further, it would be desirable to provide an infusion device having a simple structure and configuration of a clamping mechanism that is easy and intuitive to use for a user, particularly a nurse in a hospital environment, that provides reliable clamping of the infusion line so that free flow conditions are prevented even after the door of the infusion device is opened, and that also prevents inadvertent removal of the infusion line from the infusion device.
It is an object of the present invention to provide an infusion device and a method for operating an infusion device which allow for providing an easy and intuitive use for arranging an infusion line on an infusion device, which may allow for different infusion lines to be used on an infusion device, and which enable a reliable clamping of the infusion line to prevent free-flow situations.
The object of the invention is achieved by means of an infusion device comprising the features of claim 1.
Thus, the clamping mechanism comprises a first lever element pivotably connected to the housing and a second lever element connecting the first lever element to the clamping element, the second lever element being operable to act on the clamping element for moving the clamping element to and/or holding the clamping element in the clamping position.
A clamping element of the clamping mechanism is arranged on the housing and can be pivoted relative to the housing in order to act on the infusion line received in the receptacle of the housing in a clamping position to partially clamp the infusion line and in a release position to allow a flow through the infusion line by releasing the clamping. Herein, the movement of the clamping element is controlled by a combination of two lever elements, a first lever element being pivotably connected to the housing and a second lever element connecting the first lever element to the clamping element. Thus, the movement of the clamping element is mechanically controlled by a lever gear which can be actuated to move the clamping element between its clamping position and its release position.
In particular, the second lever element may be pivotably connected to the clamping element at a first joint connection and pivotably connected to the first lever element at a second joint connection. In this way, the first lever element and the second lever element form a toggle lever arrangement which can be acted on to move the clamping element, for example, towards the clamping position and which holds the clamping element in a stable manner in the clamping position, so that the clamping position cannot be released without further processing, in particular cannot be released in an unintentional manner.
The first lever element can be pivoted about a pivot axis to the housing, for example. In order to provide a toggle lever arrangement, the second joint connection may for example be located on a first side with respect to an imaginary line connecting the pivot axis and the first joint connection in a plane perpendicular to the pivot axis in the release position of the clamping member, and may be located on a second side opposite the first side with respect to the imaginary line in the clamping position of the clamping member. Thus, when moving the clamping member from the release position to the clamping position, the second joint connection at which the first lever member is pivotably connected to the second lever member changes side portions with respect to a virtual line drawn between the first joint connection (at which the clamping member is pivotably connected to the second lever member) and the pivot axis about which the first lever member is pivotable with respect to the housing), thereby providing a toggle function, such that the clamping member is held in the clamping position in a stable manner by the two lever members.
In one embodiment, the clamping mechanism comprises a spring element formed and arranged to elastically pre-tension the first lever element with respect to the housing towards a position corresponding to the release position of the clamping element. The spring element, which is formed for example by a leg spring, can be supported, for example, with one leg on the housing and with the other leg on the first lever element in order to exert a force between the housing and the first lever element toward the release position. Thus, the movement of the first lever element towards the release position of the clamping element is elastically supported by means of the spring element, such that the clamping element is automatically moved towards the release position by the action of the spring element as soon as the second joint connection crosses a virtual line (drawn between the first joint connection and the pivot axis in said plane perpendicular to the pivot axis). This allows, inter alia, the user to easily fit the infusion line into the clamping mechanism when arranging the infusion line on the receiving portion of the infusion set, making the arrangement of the infusion line on the infusion set easy and intuitive for the user.
The clamping mechanism may be actuated to move the clamping element between the clamping position and the release position, for example by acting on the first lever element or the second lever element. In one embodiment, this may occur manually by acting on a handle element connected to the first lever element or the second lever element, so that a user may manually move the clamping element of the clamping mechanism to, for example, the clamping position or from the clamping position to the release position.
In one embodiment, the movement of the clamping element to the clamping position may occur automatically when a closure element (also referred to as a door) of the infusion set is closed. The closure element is arranged, for example, pivotably on the housing and at least partially covers the receptacle in the closed position. When closing the closing element, in one embodiment, the closing element may act on the first lever element or the second lever element in order to move the clamping element into its clamping position. By acting on one of the lever elements, the clamping mechanism is thus actuated to shift the clamping element from the release position towards the clamping position, so that when the closing element is closed, the infusion line received on the receiving portion of the infusion set is automatically clamped and a free-flow situation through the infusion line is prevented.
Thus, when the closing element is closed at the time of closing the door of the infusion set, the infusion line received in the receptacle is automatically clamped, in particular to perform a pretest, such as an integrity test, to check the integrity of the pumping mechanism.
Then, for the infusion operation, the clamping mechanism is opened by transferring the clamping element from the clamping position to the release position, so that the medical fluid can be delivered through the infusion line in a controlled manner by means of a pumping mechanism acting on the infusion line.
In one embodiment, the closure element comprises a body and an actuating element, for example in the shape of a cam, movably arranged on the body. When closing the closing element, the actuating element may, for example, act on one of the lever elements, so that by the action of the actuating element the clamping mechanism is actuated and the clamping element is moved into the clamping position.
The actuating element can, for example, be connected to a handle which is actuated by the user when closing the closure element. By means of the handle, the actuating element can be moved relative to the body of the closing element, so that the actuating element acts on one of the lever elements when closing the closing element for moving the clamping element from the release position to the clamping position.
In order to automatically open the clamping mechanism for an actual infusion operation (e.g. after a pretest before the infusion operation is performed), the clamping mechanism may comprise an opening mechanism having, for example, a pin which is movable relative to the housing by means of an electric motor or the like. By means of the pin, the opening mechanism can act on the first lever element or the second lever element in order to move the first lever element or the second lever element and thereby the clamping element in order to transfer the clamping element from the clamping position to the release position. By means of the opening mechanism, in particular, the stable position of the toggle lever arrangement of the two lever elements can be overcome by moving the two lever elements such that the second joint connection (connecting the first lever element to the second lever element) crosses a virtual line connecting the first joint connection (at the first joint connection, the second lever element is pivotably connected to the clamping element) and the pivot axis (about which the first lever element can pivot relative to the housing). Once the second joint connection crosses the virtual line, a further movement of the lever element can be caused by means of the action of a spring element which tensions the first lever element towards the release position of the clamping element.
In one embodiment, the clamping mechanism comprises a base element arranged on the housing. The base element is used together with a clamping element for clamping the infusion line, the infusion line being received between the clamping element and the base element, and the clamping element being movable relative to the base element for clamping the infusion line.
The base element can be received in the receiving opening of the housing, for example in a floating manner, such that the base element is at least to some extent movable relative to the housing in the receiving opening. In this way and by supporting the base element relative to the housing, for example by means of a support spring, the base element can be automatically adjusted in its position and orientation relative to the clamping element, for example according to the tolerances of the system or the shape and dimensions of the infusion line received in the clamping mechanism, so that a reliable clamping of the infusion line can be achieved.
The clamping mechanism can in particular be arranged on the housing in a non-releasable manner, so that the clamping mechanism can act on different infusion lines received in the receptacle of the housing. Thus, the clamping element may be connected to the housing in a non-releasable manner in contrast to devices in which the clamping mechanism is arranged on the infusion line and together with the infusion line on the infusion set. This may allow for the use of different configurations on the infusion device or different infusion lines manufactured by different manufacturers.
The object is also achieved by a method for operating an infusion device, the method comprising:
-receiving an infusion line in a receiving portion of a housing of an infusion device for delivering a medical fluid through the infusion line received in the receiving portion using a pumping mechanism, and
-pivotally moving a clamping element of the clamping mechanism relative to the housing between a clamping position in which the clamping element acts on the infusion line received in the receptacle to partially clamp the infusion line, and a release position in which the clamping element allows flow through the infusion line.
In this context, the clamping mechanism comprises a first lever element which is pivotably connected to the housing and a second lever element which connects the first lever element to the clamping element, wherein the second lever element acts on the clamping element for moving the clamping element into the clamping position and/or for holding the clamping element in the clamping position.
The above-described advantages and advantageous embodiments of the infusion device are also applicable to this method, so reference should be made in this respect to the above.
The inventive idea will be described in more detail subsequently with respect to embodiments shown in the drawings. In this context:
FIG. 1 shows a schematic view of an infusion device;
FIG. 2 shows a schematic view of a clamping mechanism of the infusion set in a release position of a clamping element of the clamping mechanism;
FIG. 3 shows a schematic view of the clamping mechanism in a clamping position of the clamping element;
FIG. 4 shows a schematic view of the clamping mechanism in a release position of the clamping element for performing an actual infusion operation;
FIG. 5 shows a schematic view of the clamping mechanism in a clamping position of the clamping element when the clamping mechanism is manually actuated by a user;
FIG. 6 shows a detail view of the clamping element and the base element of the clamping mechanism; and is
Fig. 7 shows a further detail of the clamping element and the base element.
Fig. 1 shows in a schematic view an infusion set 1, the infusion set 1 having a housing 10, the housing 10 forming a receptacle 100 for receiving an infusion set 3, the infusion set 3 comprising an infusion line 30 and may comprise therein a pumping module 31 or the like in the shape of a pumping cassette. The infusion set 1 comprises a pumping mechanism 12 which in a manner known per se exerts a pumping action on the infusion line 30 and in this way causes a medical fluid to flow through the infusion line 30 for administration of the medical fluid to a patient.
It should be noted that the infusion device 1 may be configured to act on the pumping module 31 of the infusion line 30 or directly on the infusion line 30. In the latter case, any conventional administration line 30 that does not include a pumping module 31 may be used on the administration set 1.
For performing an infusion operation, an infusion set 3 is arranged on the infusion set 1 such that the infusion set 3 is operatively connected with the pumping mechanism 12. When the infusion set 3 is arranged on the infusion set 1, the door-shaped closure element 11, which is pivotably connected to the housing 10 about the pivot axis 110, is closed such that the infusion set 3 is securely held within the receptacle 100. Then, during the infusion operation, the pressure in the infusion line 30 is monitored via the pressure sensor 13, for example to monitor whether the device is functioning correctly during infusion, and an occlusion situation due to an occlusion of the infusion line 30 can be detected.
It should be noted that additional pressure sensors may be present. For example, one pressure sensor may be located upstream of the pumping mechanism 12 and another pressure sensor may be located downstream of the pumping mechanism 12, in order to detect the pressure within the infusion set 3 upstream and downstream of the pumping mechanism 12.
The infusion set 1 comprises a clamping mechanism, schematically indicated in fig. 1 by reference numeral 2, which clamping mechanism 2 is intended to clamp the infusion line 30 when the infusion line 30 is arranged in the receiving portion 100 of the infusion set 1, in order to be able to perform, for example, a so-called occlusion pretest of the pumping mechanism 12.
An embodiment of the clamping mechanism 2 will be explained later with reference to fig. 2 to 5.
The clamping mechanism of fig. 2 to 5 comprises a clamping member 20, which clamping member 20 is pivotally connected to the housing part 102 of the housing 10 about a pivot axis 200 in a non-releasable manner. The clamping element 20 is movable relative to the housing part 102 between a release position (fig. 2) and a clamping position (fig. 3) in order to be able to arrange the infusion line 30 between the clamping element 20 and the base element 24 of the clamping mechanism 2 in the release position according to fig. 2 and to locally clamp the infusion line 30 in the clamping position according to fig. 3 in order to block the infusion line 30 to prevent a free flow of medical liquid through the infusion line 30 towards the patient.
The clamping member 20 is operated by means of a toggle lever arrangement comprising two lever members 21, 22, a first lever member 22 being pivotably connected to the housing portion 102 about a pivot axis 220, and a second lever member 21 connecting the first lever member 22 to the clamping member 20. To this end, the second lever element 21 is pivotably connected to the end 201 of the clamping element 20 at a first joint connection 210 and to the first lever element 22 at a second joint connection 212.
A toggle lever arrangement with lever elements 21, 22 is used to actuate the clamping element 20 to move the clamping element 20 between its clamping position (fig. 3) and its release position (fig. 2). Furthermore, the toggle lever arrangement with the lever elements 21, 22 serves to hold the clamping element 20 stably in the clamping position (fig. 3) so that the clamping element 20 cannot be moved unintentionally out of the clamping position, so that the infusion line 30 is held firmly in the clamping position by the clamping element 20.
In particular, in the release position (fig. 2), the second joint connection 212 is arranged at a first side with respect to a (virtual) line L drawn connecting the first joint connection 210 and the pivot axis 220 in a plane perpendicular to the pivot axis 220 (corresponding to the drawing planes of fig. 2 and 3). In contrast, in the clamping position (fig. 3), the second joint connection 212 is arranged at a second side opposite the first side with respect to the line L, so that the second joint connection 212 of the toggle lever arrangement with the lever elements 21, 22 has to be moved across L in order to move the clamping element 20 from the release position (fig. 2) into the clamping position (fig. 3). As shown in fig. 3, this provides a toggle action of the toggle lever arrangement with the lever elements 21, 22, since the lever elements 21, 22 are held in a stable manner in the clamping position such that the clamping element 20 is fastened to interact with the infusion line 30 received between the clamping element 20 and the base element 24.
The first lever element 21 is tensioned towards the release position by means of a spring element 23, the spring element 23 being formed as a leg spring having one leg 230 supported on the housing part 102 and another leg 231 supported on the lever element 22. The spring element 23 acts on the lever element 22 in such a way as to support the movement of the lever element 22 towards the release position of the clamping element 20.
In the clamping position (fig. 3), the clamping element 20 is held stably by the spring force of the (resilient) infusion line 30, due to the position of the lever elements 21, 22 in abutment with the housing part 102, the spring action of the infusion line 30 exceeding the pre-tensioning force of the spring element 23, so that the lever elements 21, 22 cannot be moved towards the release position (without actuation).
As shown in fig. 2, the clamping mechanism 2 is for example in a release position in an open position of the closing element 11 in the shape of a door of the infusion set 1. In the open position, the closure element 11 may, for example, be completely open (at an angle of approximately 90 ° to the housing 10). In this state, the infusion set 3 may be placed on the infusion set 1 and the infusion line 30 may be received between the clamping element 20 and the base element 24, as shown in fig. 2.
As shown in fig. 3, the clamping mechanism 2 automatically shifts to the clamping position of the clamping element 20 when closing the closure element 11 by pivoting the closure element 11 about its pivot axis 110 in the closing direction a. In particular, when closing the closure element 11, the user actuates a handle 113 connected to an actuating element 111, which actuating element 111 is pivotably arranged on a body 114 of the closure element 11 about a pivot axis 112, as shown in fig. 2, the handle 113 being configured, for example, to actuate a locking mechanism for locking the closure element 11 in its closed position. As shown in fig. 3, just before reaching the fully closed position of the closure element 11, the handle 113 is moved in the movement direction B (for example locking the closure element 11 with respect to the housing 10), thus pivoting the actuating element 111 in the shape of a cam about its pivot axis 112. In this way, the actuating element 111 acts via the end portion 115 on the projecting actuating nose 221 of the lever element 22 and in this way pushes the lever element 22 towards the clamping position of the clamping element 20.
When the closure element 11 is closed and the handle 113 is no longer actuated, the actuating element 111, by means of the movement of its end portion 115, brings the actuating nose 221 into the position shown in fig. 4.
Thus, when the closing element 11 is closed, the clamping mechanism 2 is automatically actuated so that the clamping element 20 adopts the clamping position of fig. 3. Thus, when closing the closure element 11, as shown in fig. 3, the infusion line 30 received in the receiving portion 100 of the infusion set 1 is clamped, thereby preventing free flow of liquid through the infusion line 30.
Before starting the actual infusion operation, a pretest may be performed when the clamping mechanism 2 is in the clamping position by its clamping element 20. In particular, a so-called pressure rise test may be performed in order to test the occlusion detection function of the infusion set 1.
For the actual infusion operation, the clamping mechanism 2 is opened by means of an opening mechanism 25, which opening mechanism 25 comprises a pin 250, which pin 250 can be moved electrically relative to the housing part 102 in order to act on the lever element 21 via the tip 251 of the pin 250 and in this way toggle the arrangement of the lever elements 21, 22 in order to move the clamping element 20 to the release position of fig. 4. Thus, liquid may flow through the infusion line 30 and may be delivered by the infusion device 1 towards a patient connected to the infusion line 30.
As indicated in fig. 3, the opening of the clamping mechanism 2 is initiated by the opening mechanism 25, which opening mechanism 25 is intended to act on the lever element 21 by means of its pin 250 in order to move the joint connection 212 across the (virtual) line L connecting the joint connection 210 and the pivot axis 220. As soon as the joint connection 212, at which the lever elements 21, 22 are pivotably connected to one another, crosses the line L, the lever elements 21, 22 and the clamping element 20 are moved further towards the release position by the spring element 23 acting on the lever element 22, the spring element 23 ensuring that the clamping element 20 is moved completely into the release position.
After the end of the infusion operation, the user may again wish to open the closure element 11, for which purpose the user can grip the handle 113 to rotate the handle 113 together with the actuating element 111 about the pivot axis 112, so that the actuating element 111 acts on the lever element 22 in such a way that the clamping element 20 is moved again into the clamping position of fig. 3. This takes place by the end portion 115 of the actuating element 111 acting on the actuating nose 221 of the lever element 22, so that when the closure element 11 is opened, the clamping element 20 is brought into its clamping position again.
If the user now wishes to remove the infusion line 30 from the infusion set 1, the user can, for example, as shown in fig. 5, apply a finger to a handle element 211 fixedly connected to the lever element 21 in order to toggle the arrangement of the lever elements 21, 22 towards the release position of the holding element 20. In the release position of the clamping element 20, the infusion line 30 can be easily removed from the receptacle 100.
The opening of the clamping mechanism 2 can also be triggered by an opening mechanism 25, the opening of the clamping mechanism 2 being used to remove the infusion line 30 from the infusion set 1 when the closure element 11 is opened.
In an emergency situation, the user may also pull the infusion line 30 to remove it from the clamp mechanism 2, in which case the clamp mechanism 2 will automatically open due to the resilient pre-tensioning force of the spring element 23.
As shown in detail in fig. 6 and 7, in the embodiment shown in fig. 2 to 5, the base element 24 is floatingly received in the receiving opening 103 of the housing part 102. In particular, the base element 24 is movably received in the receiving opening 103, but is held within the receiving opening 103 by the fastening portion 241. The support spring 242 supports the base element 24 relative to the housing portion 102, the clamping face 240 facing the clamping face 202 of the clamping element 20 for receiving the infusion line 30 between the clamping face 202 and the clamping face 240. As shown in fig. 6 and 7, because the base element 24 is floatingly disposed on the housing portion 102, tolerances in the system and differences in the size and shape of different infusion lines 30 can be accommodated in an automated manner by the floating movement of the base element 24.
The inventive idea is not limited to the above described embodiments but can be implemented in a completely different way.
With an infusion device of the described type, the arrangement of the infusion line on the infusion device can be made simple and intuitive.
In the absence of the infusion line, the clamping mechanism automatically assumes its open state (release position of the clamping element) due to the absence of the infusion line.
The actuation of the clamping mechanism requires little force, since this can be achieved by acting on one of the lever elements.
Due to the floating arrangement of the base element, the infusion device may be compatible with a large number of different infusion lines, which may be manufactured by different manufacturers.
The clamping mechanism may be designed to reliably resist inadvertent removal of the infusion line.
List of reference numerals
1 infusion device
10 casing
100 receiving part
101 front surface
102 housing part
103 receiving opening
11 closure element (door)
110 pivot axis
111 actuating element (cam)
112 pivoting axis
113 handle
114 body
115 end portion
12 pumping mechanism
13 sensor device
2 clamping mechanism
20 clamping element
200 pivoting shaft
201 end portion
202 clamping surface
21 lever element
210 pivotable joint
211 handle element
212 pivotable joint
22 lever element
220 pivot connection
221 actuating nose
23 spring element
24 base element
240 clamping surface
241 fastening part
242 support spring
25 opening mechanism
250 pin
251 tip end
3 transfusion system
30 pipeline
31 pumping box
A closing direction
Direction of movement of B
Direction of movement of C
L connecting line
Claims (15)
1. An infusion device (1) comprising:
-a housing (10), the housing (10) having a receiving portion (100) for receiving an infusion line (20);
-a pumping mechanism (12), the pumping mechanism (12) being for delivering a medical fluid through an infusion line (20) received in the receiving portion (100); and
-a clamping mechanism (2), the clamping mechanism (2) having a clamping element (20), the clamping element (10) being pivotably connected to the housing (10) and being movable relative to the housing (10) between a clamping position, in which the clamping element (20) acts on an infusion line (20) received in the receiving portion (100) to locally clamp the infusion line (20), and a release position, in which the clamping element (20) allows a flow through the infusion line (20);
it is characterized in that the preparation method is characterized in that,
the clamping mechanism (2) comprises a first lever element (22) pivotably connected to the housing (10) and a second lever element (21) connecting the first lever element (22) to the clamping element (20), the second lever element (21) being operable to act on the clamping element (20) for moving the clamping element (20) into the clamping position and/or for holding the clamping element (20) in the clamping position.
2. Infusion device (1) according to claim 1, characterized in that the second lever element (21) is pivotably connected to the clamping element (20) at a first joint connection (210) and to the first lever element (22) at a second joint connection (212).
3. Infusion set (1) according to claim 2, characterized in that the first lever element (22) is pivotable to the housing (10) about a pivot axis (220), wherein the second joint connection (212) is located on a first side with respect to a virtual line (L) in the release position of the clamping element (20), which virtual line (L) connects the pivot axis (220) and the first joint connection (210) in a plane perpendicular to the pivot axis (220), and the second joint connection (212) is located on a second side opposite the first side with respect to the virtual line (L) in the clamping position of the clamping element (20), as seen in the plane perpendicular to the pivot axis (220).
4. Infusion device (1) according to one of the claims 1 to 3, characterized in that the clamping mechanism (2) comprises a spring element (23), which spring element (23) is formed and arranged to elastically pre-tension the first lever element (22) with respect to the housing (10) towards a position corresponding to the release position of the clamping element (20).
5. Infusion device (1) according to one of the preceding claims, characterized in that at least one of the first lever element (22) and the second lever element (21) comprises a handle element (211), the handle element (211) being used for actuating the clamping mechanism (2).
6. Infusion device (1) according to one of the preceding claims, characterized in that a closure element (11) is pivotably arranged on the housing (10) and that the closure element (11) is configured to at least partially cover the receiving portion (100) in a closed position, wherein the closure element (11) is operable to act on one of the first lever element (22) and the second lever element (21) for moving the clamping element (20) into its clamping position when pivoting the closure element (11) towards the closed position.
7. Infusion device (1) according to claim 6, characterized in that the closure element (11) comprises a body (114) and an actuation element (111) movably arranged on the body (114), the actuation element (111) being configured to act on one of the first lever element (22) and the second lever element (21) when pivoting the closure element (11) towards the closed position.
8. Infusion device (1) according to claim 7, characterized in that said closure element (11) comprises a handle (113), said handle (113) being connected with said actuation element (111) for moving said actuation element (111) with respect to said body (114).
9. Infusion device (1) according to one of the preceding claims, characterized in that the clamping mechanism (2) comprises an opening mechanism (25), the opening mechanism (25) being configured to act on one of the first lever element (22) and the second lever element (21) for moving the clamping element (20) to the release position.
10. Infusion device (1) according to claim 9, characterized in that the opening mechanism (25) comprises a pin (250), the pin (250) being movable relative to the housing (10) to act on one of the first lever element (22) and the second lever element (21) for moving the clamping element (20) to the release position.
11. Infusion device (1) according to one of the preceding claims, characterized in that the clamping mechanism (2) comprises a base element (24) arranged on the housing (10), the clamping element (20) being movable relative to the base element (24) for clamping the infusion line (20) between the clamping element (20) and the base element (24) in the clamping position and allowing a flow through the infusion line (20) in the release position.
12. Infusion device (1) according to claim 11, characterized in that the base element (24) is movably received in a receiving opening (103) of the housing (10).
13. Infusion device (1) according to claim 11 or 12, characterized in that the base element (24) is resiliently supported on the housing (10) by means of a support spring (242).
14. Infusion device (1) according to one of the preceding claims, characterized in that the clamping element (20) is arranged on the housing (10) in a non-releasable manner.
15. A method for operating an infusion device (1), the method comprising:
-receiving an infusion line (20) in a receiving portion (100) of a housing (10) of the infusion device (1) for delivering a medical fluid through the infusion line (20) received in the receiving portion (100) using a pumping mechanism (12), and
-pivotally moving a clamping element (20) of a clamping mechanism (2) relative to the housing (10) between a clamping position, in which the clamping element (20) acts on an infusion line (20) received in the receiving portion (100) to locally clamp the infusion line (20), and a release position, in which the clamping element (20) allows a flow through the infusion line (20),
characterized in that the clamping mechanism (2) comprises a first lever element (22) which is pivotably connected to the housing (10) and a second lever element (21) which connects the first lever element (22) to the clamping element (20), wherein the second lever element (21) acts on the clamping element (20) for moving the clamping element (20) into the clamping position and/or for holding the clamping element (20) in the clamping position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP183055599 | 2018-05-04 | ||
| EP18305559 | 2018-05-04 | ||
| PCT/EP2019/060163 WO2019211107A1 (en) | 2018-05-04 | 2019-04-18 | Infusion device comprising a clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112512620A true CN112512620A (en) | 2021-03-16 |
| CN112512620B CN112512620B (en) | 2024-01-26 |
Family
ID=62217899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980029785.6A Active CN112512620B (en) | 2018-05-04 | 2019-04-18 | Infusion device comprising a clamping device |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3787733A1 (en) |
| CN (1) | CN112512620B (en) |
| WO (1) | WO2019211107A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112717231A (en) * | 2020-12-31 | 2021-04-30 | 深圳市好克医疗仪器股份有限公司 | Infusion pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528286A (en) * | 2006-11-08 | 2009-09-09 | 弗雷泽纽斯维亚尔两合公司 | Device for controlling the opening and closing of a clamp in a positive displacement pump |
| CN101990446A (en) * | 2008-04-30 | 2011-03-23 | 并木精密宝石株式会社 | Infusion pump |
| WO2011121923A1 (en) * | 2010-03-31 | 2011-10-06 | テルモ株式会社 | Infusion pump |
| US20150018766A1 (en) * | 2012-03-26 | 2015-01-15 | Terumo Kabushiki Kaisha | Infusion pump |
| EP2924289A1 (en) * | 2012-11-14 | 2015-09-30 | Namiki Seimitu Houseki Kabushiki Kaisha | Tubing pump |
| US20180080605A1 (en) * | 2011-12-21 | 2018-03-22 | Deka Products Limited Partnership | System, Method, and Apparatus for Clamping |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4754917B2 (en) * | 2004-10-19 | 2011-08-24 | テルモ株式会社 | Infusion device |
-
2019
- 2019-04-18 WO PCT/EP2019/060163 patent/WO2019211107A1/en active Application Filing
- 2019-04-18 EP EP19718699.2A patent/EP3787733A1/en active Pending
- 2019-04-18 CN CN201980029785.6A patent/CN112512620B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528286A (en) * | 2006-11-08 | 2009-09-09 | 弗雷泽纽斯维亚尔两合公司 | Device for controlling the opening and closing of a clamp in a positive displacement pump |
| CN101990446A (en) * | 2008-04-30 | 2011-03-23 | 并木精密宝石株式会社 | Infusion pump |
| WO2011121923A1 (en) * | 2010-03-31 | 2011-10-06 | テルモ株式会社 | Infusion pump |
| US20180080605A1 (en) * | 2011-12-21 | 2018-03-22 | Deka Products Limited Partnership | System, Method, and Apparatus for Clamping |
| US20150018766A1 (en) * | 2012-03-26 | 2015-01-15 | Terumo Kabushiki Kaisha | Infusion pump |
| EP2924289A1 (en) * | 2012-11-14 | 2015-09-30 | Namiki Seimitu Houseki Kabushiki Kaisha | Tubing pump |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3787733A1 (en) | 2021-03-10 |
| CN112512620B (en) | 2024-01-26 |
| WO2019211107A1 (en) | 2019-11-07 |
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